Technical sheet

Colmi I28 Ultra smartwatch

Name: Colmi I28 Ultra smartwatch
Brand: Colmi
SKU: 141892712
Price: 35.99 EUR
Availability: InStock
Rating: 4 (1 reviews)

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1 Reviews

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Features of Colmi I28 Ultra smartwatch

Product description of Colmi I28 Ultra smartwatch

Description summary

Experience the COLMI I28 Ultra, a vibrant 1.43-inch AMOLED smartwatch for active adults. Enjoy crystal-clear Always-On Display, seamless Bluetooth calling, and smart notifications. Monitor heart rate, SpO2, and sleep with advanced health tracking. With over 100 sports modes and IP68 waterproofing, it´s your perfect companion for fitness and daily life. Control music, access AI voice assistant, and personalize with diverse watch faces. Stay connected and in control, effortlessly

This device is unlocked from any phone company (factory unlocked).

COLMI I28 Ultra: The Ultimate AMOLED Smartwatch for Your Active Lifestyle

Elevate your daily routine with the COLMI I28 Ultra, a sophisticated smartwatch designed for the modern adult. Fusing cutting-edge technology with an exceptionally clear display, the I28 Ultra is your ultimate companion for connectivity, fitness, and holistic health management. Experience unparalleled visual clarity on its stunning 1.43-inch AMOLED screen, bringing your notifications, watch faces, and health data to life with vibrant color and deep blacks, even in bright sunlight. With the convenient Always-On Display feature, you can glance at the time and essential information without ever needing to raise your wrist or press a button.

Stay seamlessly connected to your world. The COLMI I28 Ultra features advanced Bluetooth calling, allowing you to answer, reject, and even make calls directly from your wrist. Whether you´re in a meeting, on a run, or have your hands full, you´ll never miss an important conversation again. Receive real-time notifications for messages, emails, and your favorite social media apps, keeping you in the loop without constantly checking your phone.

Take command of your well-being with a comprehensive suite of health monitoring tools. The I28 Ultra is equipped with an advanced optical sensor for precise, 24/7 wrist heart rate tracking, providing you with valuable insights into your cardiovascular health throughout the day and during workouts. Monitor your blood oxygen (SpO2) levels on-demand to better understand your body´s performance and recovery. At night, the detailed sleep tracking function analyzes your light, deep, and REM sleep stages, offering actionable data to help you improve your sleep quality and wake up refreshed.

Unleash your athletic potential with over 100 dedicated sports modes. From running and cycling to swimming and yoga, the COLMI I28 Ultra accurately tracks your activity, recording essential metrics like duration, distance, calories burned, and your heart rate zones. The robust IP68 waterproof rating ensures the watch can handle sweat, rain, and daily splashes, making it a reliable partner for any adventure. Further enhance your daily efficiency with the integrated AI voice assistant, music playback control, weather forecasts, and a vast library of customizable watch faces to match your style and mood.

Key Features:

* Brilliant 1.43-inch AMOLED Full-Screen Touch Display
* Energy-Efficient Always-On Display (AOD) Functionality
* Integrated High-Fidelity Speaker and Microphone for Bluetooth Calls
* Continuous 24/7 Wrist Heart Rate Monitoring
* On-Demand Blood Oxygen (SpO2) Measurement
* Comprehensive Sleep Quality Analysis
* Over 100 Professional Sports and Fitness Tracking Modes
* Smart Notifications for Calls, Texts, and Applications
* AI Voice Assistant for Hands-Free Control
* IP68 Waterproof for Daily Use and Sports
* Music Playback and Camera Remote Control
* Extensive Library of Customizable and Cloud-Based Watch Faces

Technical Specifications:

* Display: 1.43 inch AMOLED Screen
* Resolution: 466*466 pixels
* Main Chipset: Realtek RTL8763EWE-VP
* Connectivity: Bluetooth 5.0
* Battery Capacity: 260 mAh
* Typical Usage Battery Life: 5-7 days
* Waterproof Rating: IP68
* Compatibility: Android 5.0 or higher / iOS 9.0 or higher
* Application: FitCloudPro

Specifications

Manual

Technical specifications of Colmi I28 Ultra smartwatch

Display Type

Amoled
Screen Size

1.43 Inch
Resolution

466*466 Pixels
Touchscreen

Full Screen Touch
Wireless Connectivity

Bluetooth 5.3
Battery Life

260mah
Water Resistance Rating

Ip68 Waterproof
Color

Silver
Age

Adult
Features

Wrist heart rate
Product Aspect

New

Features of Colmi I28 Ultra smartwatch

Color Silver

Color

Silver

Age Adult

Age

Adult

Features Wrist heart rate

Features

Wrist heart rate

Product Aspect New

Product Aspect

New

Key differentiators

Comprehensive health suite including continuous heart rate, SpO2, and sleep stage tracking.

Integrated speaker and microphone for Bluetooth calling directly from the watch.

Long battery life with up to 7 days of typical usage on a single charge.

Vibrant 1.43-inch AMOLED full-screen touch display with 466x466 resolution.

Technology in Colmi I28 Ultra smartwatch

Energy rating

Warnings

/ 5

1 Reviews

What our customers are saying about Colmi I28 Ultra smartwatch

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Include AI Generated questions and answers

2026-09-14

Generated by AI and verified

What are the main features of the Colmi I28 Ultra Smartwatch?

Answer of Generated by AI and verified

The Colmi I28 Ultra Smartwatch features a 1.43-inch AMOLED touchscreen display with a 466x466 pixel resolution. It offers comprehensive health tracking, including a continuous heart rate monitor, SpO2 sensor, and sleep tracking. You can also handle calls, receive smart notifications, and use the AI voice assistant directly from your wrist. The watch is compatible with both Android and iOS devices.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

How long does the battery last on the Colmi I28 Ultra?

Answer of Generated by AI and verified

The Colmi I28 Ultra Smartwatch offers a battery life of up to 7 days on a single charge, depending on usage.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Can I make and receive phone calls with the Colmi I28 Ultra?

Answer of Generated by AI and verified

Yes, the Colmi I28 Ultra supports Bluetooth calling, allowing you to answer, reject, and make calls directly from the watch when it's connected to your smartphone.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Is the Colmi I28 Ultra Smartwatch worth buying for fitness users?

Answer of Generated by AI and verified

The Colmi I28 Ultra Smartwatch offers advanced fitness tracking features, including heart rate monitoring and multiple sports modes, making it a valuable tool for fitness users.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What type of display does the Colmi I28 Ultra have?

Answer of Generated by AI and verified

The Colmi I28 Ultra is equipped with a 1.43-inch AMOLED display, which provides vibrant colors and clear visuals. The screen resolution is 466x466 pixels.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Is the Colmi I28 Ultra smartwatch waterproof?

Answer of Generated by AI and verified

Yes, the Colmi I28 Ultra has an IP68 water resistance rating, which means it is submersible and protected against dust and water ingress during activities like swimming in shallow water.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What health monitoring features are included in the Colmi I28 Ultra?

Answer of Generated by AI and verified

This smartwatch includes a comprehensive suite of health monitoring tools. It features a continuous heart rate monitor, an SpO2 sensor to measure blood oxygen levels, and detailed sleep tracking that monitors sleep stages.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Does the Colmi I28 Ultra have a built-in GPS?

Answer of Generated by AI and verified

No, the Colmi I28 Ultra does not have a built-in GPS. It can use your connected smartphone's GPS for tracking outdoor activities.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Can I use the Colmi I28 Ultra for tracking workouts?

Answer of Generated by AI and verified

Yes, the watch is well-suited for tracking workouts. It includes over 100 sports modes, allowing you to monitor various activities like running, cycling, swimming, and yoga.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

Is this smartwatch suitable for both men and women?

Answer of Generated by AI and verified

Yes, the Colmi I28 Ultra is designed as a unisex product for adults, making it suitable for anyone.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What phones are compatible with the Colmi I28 Ultra?

Answer of Generated by AI and verified

The Colmi I28 Ultra is compatible with smartphones running on both Android and iOS operating systems. You will need to download the 'FitCloudPro' application to sync the watch with your phone.

* Generated by AI based on customer and product data

2026-09-14

Generated by AI and verified

What kind of connectivity does the Colmi I28 Ultra use?

Answer of Generated by AI and verified

The Colmi I28 Ultra uses Bluetooth for wireless connectivity to your smartphone. The product specifications list both Bluetooth 5.0 and Bluetooth 5.3.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

What are the main health monitoring features of the Colmi I28 Ultra smartwatch?

Answer of Generated by AI and verified

The Colmi I28 Ultra offers a comprehensive suite of health monitoring tools. It includes a continuous, 24/7 wrist-based heart rate monitor, an SpO2 sensor to measure blood oxygen levels, and detailed sleep tracking that analyzes your sleep stages.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

Can I make and receive phone calls on the Colmi I28 Ultra?

Answer of Generated by AI and verified

Yes, this smartwatch features Bluetooth calling, allowing you to manage calls directly from your wrist. You can also receive smart notifications for messages, emails, and social media apps.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

Does the Colmi I28 Ultra have a voice assistant?

Answer of Generated by AI and verified

Yes, the Colmi I28 Ultra is equipped with an AI voice assistant to help you with various tasks hands-free.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

Is the Colmi I28 Ultra smartwatch worth buying for fitness users?

Answer of Generated by AI and verified

The Colmi I28 Ultra is an excellent choice for fitness users, offering over 100 sports modes and advanced health monitoring features like heart rate and SpO2 tracking.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

What is the screen size and resolution of the Colmi I28 Ultra?

Answer of Generated by AI and verified

The Colmi I28 Ultra features a 1.43-inch AMOLED display with a resolution of 466x466 pixels.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

Is the Colmi I28 Ultra smartwatch waterproof?

Answer of Generated by AI and verified

Yes, the Colmi I28 Ultra has an IP68 water resistance rating, which means it is submersible and protected against dust and water ingress during activities like swimming in shallow water.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

How many sports modes does the Colmi I28 Ultra support?

Answer of Generated by AI and verified

The Colmi I28 Ultra supports over 100 different sports modes, allowing you to track a wide variety of fitness activities.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

What is the battery capacity of the Colmi I28 Ultra?

Answer of Generated by AI and verified

The Colmi I28 Ultra is equipped with a 260 mAh battery.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

What type of display does the Colmi I28 Ultra have?

Answer of Generated by AI and verified

The Colmi I28 Ultra is equipped with a vibrant AMOLED display, ensuring clear visuals.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

Is this smartwatch suitable for tracking my workouts?

Answer of Generated by AI and verified

Absolutely. With over 100 sports modes, continuous heart rate monitoring, and an SpO2 sensor, the Colmi I28 Ultra is well-equipped for advanced fitness and activity tracking.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

What phones are compatible with the Colmi I28 Ultra smartwatch?

Answer of Generated by AI and verified

The Colmi I28 Ultra is compatible with smartphones running Android 5.0 or higher and devices running iOS 9.0 or higher.

* Generated by AI based on customer and product data

2026-09-17

Generated by AI and verified

How does the Colmi I28 Ultra connect to a smartphone?

Answer of Generated by AI and verified

This smartwatch connects to your phone via Bluetooth. It supports Bluetooth 5.0 and Bluetooth 5.3 for a stable connection.

* Generated by AI based on customer and product data

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Frequently bought together

Best sellers

Use cases

Daily Health and Wellness Monitoring 90% Fit

This smartwatch is a great starting point for anyone looking to keep an eye on their daily health. It offers continuous heart rate tracking, SpO2 monitoring, and detailed sleep analysis, providing a practical overview of your well-being without being overly complex.

Continuous heart rate monitor,SpO2 sensor,Sleep tracking with stage analysis,Up to 7-day battery life

Casual and Multi-Sport Fitness Tracking 80% Fit

With over 100 sports modes, this watch is perfect for casual users who enjoy a variety of activities like running, cycling, or yoga. It's an easy-to-use tool for tracking different workouts and staying motivated on your fitness journey.

100 sports modes,IP68 water resistance,AMOLED touchscreen display,Music controls

Everyday Smart Connectivity 85% Fit

Stay connected without constantly reaching for your phone. You can answer, reject, and even make calls directly from your wrist, and receive smart notifications, making it a practical companion for daily life and work.

Bluetooth call handling,Smart notifications,AI voice assistant,Compatibility with Android and iOS

Workout Companion for Swimming and Water Activities 75% Fit

Thanks to its IP68 water resistance rating, you can confidently wear this watch for swimming or other water-based workouts. It can track your activity in the pool, making it a reliable and affordable choice for aquatic fitness.

IP68 water resistance rating,Swimming sport mode,1.43-inch AMOLED display,Zinc alloy case

Best for

Best for Everyday Health Tracking

With continuous heart rate monitoring, SpO2 tracking, and over 100 sports modes, this smartwatch provides comprehensive yet easy-to-use insights for maintaining an active and healthy lifestyle.

Ideal for Smart Connectivity on a Budget

This watch offers essential smart features like call handling and notifications, plus extensive health monitoring, providing excellent value without a high price tag.

Smart Connectivity Features: 80%

Great for Staying Alert and Active

Stay on top of your health with continuous heart rate data, sleep stage analysis, and health alerts, empowering you to actively manage your fitness goals.

Accurate Activity Tracking: 80%

Perfect for Stylish, All-Day Wear

Featuring a vibrant 1.43-inch AMOLED display, a zinc alloy case, and customizable watch faces, this smartwatch combines modern aesthetics with practical health tracking.

Smart Connectivity Features: 80%

Benefits

FunctionalTrack Key Health Metrics Around the Clock

Stay informed about your well-being with integrated health tracking features. The watch includes a continuous heart rate monitor, an SpO2 sensor to check blood oxygen levels, and detailed sleep tracking that even identifies different sleep stages.

Heart rate monitor: yes

Spo2 sensor: yes

Sleep tracking: yes

Sleep stages tracking: yes

Heart rate measurement mode: continuous

FunctionalTrack a Wide Variety of Workouts

Log your exercise with a device that keeps up with your diverse fitness routine. With over 100 sports modes, including running, cycling, swimming, and yoga, you can accurately track a wide range of activities.

Sports modes count: 100

Type of sports monitor: running

cycling

swimming

yoga

Water resistance rating: Ip68 Waterproof

FunctionalInteract with Your Watch Using Your Voice

Enjoy the convenience of hands-free control with the built-in AI voice assistant. You can use voice commands to perform tasks without needing to interact with the touchscreen, making it easier to use while on the go.

Ai voice assistant: yes

Voice assistant: AI voice assistant

Ideal buyer profiles

The User

This user seeks a feature-rich smartwatch without a high price tag. They want comprehensive health and fitness tracking, smart notifications, and a quality display, but are mindful of cost and value.

The Colmi I28 Ultra offers an extensive set of features, including continuous heart rate monitoring, SpO2 tracking, and over 100 sports modes, at an accessible price point. Its vibrant AMOLED screen, call handling, and compatibility with both Android and iOS provide a complete smartwatch experience that delivers excellent value.

Ideal Buyer

This individual wants a versatile, everyday smartwatch to stay connected and monitor general wellness. They value convenience, long battery life, and ease of use for tracking daily activity, sleep, and receiving notifications from their phone.

With up to 7 days of battery life, this watch minimizes the need for frequent charging. It seamlessly integrates with smartphones for notifications and call handling, while features like sleep tracking, continuous heart rate monitoring, and an IP68 water resistance rating make it a reliable companion for daily life and general fitness activities.

Competitive features

When comparing the Colmi I28 Ultra Smartwatch to its competitors, such as the Maxcom Fw53 Nitro and other Colmi models, the primary differentiators lie in its specific feature set rather than technical specifications, which are not detailed in the comparison data. The I28 Ultra stands out with its 1.43" AMOLED display, providing superior visual clarity. While all listed watches fall within a very narrow price range, the I28 Ultra's combination of a premium screen, comprehensive health tracking, and unique software features like stock tracking and Muslim prayer alerts sets it apart.

Where it excels

The Colmi I28 Ultra features a 1.43-inch AMOLED display, which typically offers more vibrant colors and deeper blacks compared to standard LCD screens found on many competing smartwatches. It includes unique software features not commonly found in this category, such as stock tracking and Muslim prayer alerts, adding value beyond standard fitness and notification functions. With a stated battery life of up to 7 days, it offers solid endurance for users who prefer less frequent charging, a key advantage for continuous health monitoring.

Consider alternatives if...

Verdict

The Colmi I28 Ultra Smartwatch is a strong contender in the budget-friendly smartwatch market. Its standout feature is the large 1.43" AMOLED display, which delivers a more premium viewing experience than is typical at this price point. It successfully combines essential health and fitness tracking (heart rate, SpO2, sleep) with practical connectivity features like Bluetooth calling and an AI voice assistant. The inclusion of niche functionalities such as stock tracking and prayer alerts gives it a unique edge. For those seeking a visually impressive and feature-rich smartwatch without a high price tag, the I28 Ultra is an excellent choice.

Specs comparison

	Colmi I28 Ultra smartwatch	Colmi P71 Smartwatch	Colmi P76 Smartwatch	Colmi P81 Smartwatch	Colmi P86 Smartwatch	Colmi V89 Smartwatch
Battery Life	7 days	7 days	multiple days	5 days	7 days	5 days
Water Resistance	ip68	ip68	3atm	ip68	ip67	ip67
Wireless Connectivity	Bluetooth 5.3	Bluetooth 5.1	Bt5.3	Bt5.3	5.1	5.2
Gps	No	No	No	-	No	No
Touchscreen	Yes	Yes	Yes	Yes	Yes	Yes
Battery Type	rechargeable lithium	Lithium polymer	rechargeable lithium	Lithium Polymer	230mAh	rechargeable lithium
Screen Size Inches	1.43 inches	1.9 1.2 - 1.8	1.96 inches	1.9 inches	1.81 1.2 - 1.8	1.43 inches
Battery Life Days	7 days	7 days	-	5 days	7 days	5 hours
Sports Modes Count	100	140	multiple	100	100	100
Spo2 Sensor	Yes	Yes	Yes	Yes	Yes	Yes
Heart Rate Measurement Mode	continuous	continuous	continuous	-	continuous	continuous
Compatibility Os	android, ios	4.4	-	5	Android 4.4 or higher, iOS 9.0 or higher	5
Sleep Stages Tracking	Yes	No	-	-	Yes	Yes
Resolution	466	240x284	240	240*284 Pixels	240x286	466x466
Screen Resolution	466*466 pixels	240 x 289	240 px	240 x 284	240x286	466x466 pixels
Smart Notifications	Yes	Yes	Yes	Yes	Yes	Yes
Case Material	zinc alloy	ABS+PC	unknown	-	-	Zinc Alloy + PC
Music Controls	Yes	Yes	-	Yes	Yes	Yes
Call Handling	answer, reject, and make calls directly from your wrist	bluetooth calling	-	make and receive calls via Bluetooth	Bluetooth calling with built-in high-fidelity speaker and microphone	-
Type Of Home Diagnostic Monitor	Smartwatch	smartwatch	Smartwatch	-	Smartwatch	smartwatch

Specs vs competitors

	Colmi I28 Ultra smartwatch	Aiwa Sw-a700 Smartwatch	Ecowatch Ew06 Smartwatch	No.1 Dt V9 Ultra 2 Smartwatch	Maxcom Fw74 Aurum Smartwatch	Haylou Vibe Smartwatch
Battery Life	7 days	10 days	14 days	5 days	-	-
Water Resistance	ip68	ip68	5 ATM	ip68	ip68	ip68
Wireless Connectivity	Bluetooth 5.3	-	-	-	5.1	-
Gps	No	No	Yes	Yes	-	No
Touchscreen	Yes	Yes	Yes	Yes	Yes	Yes
Battery Type	rechargeable lithium	Lithium Polymer	300 mAh	rechargeable lithium	Lithium-Ion	-
Screen Size Inches	1.43 inches	1.3 1.2 - 1.8	1.43 inches	2.1 1.2 - 1.8	-	1.43 1.2 - 1.8
Battery Life Days	7 days	10 hours	14 days	-	7 days	7 hours
Type Of Sports Monitor	running, cycling, swimming, yoga	Multi-Sport	Multi-Sport	multi-sport	-	running, cycling, swimming, yoga
Sports Modes Count	100	4	-	-	multiple	100
Spo2 Sensor	Yes	Yes	Yes	Yes	Yes	Yes
Heart Rate Measurement Mode	continuous	continuous	continuous	continuous	continuous	continuous
Compatibility Os	android, ios	Android 5.0 and above / iOS 9.0 and above	8	6	-	-
Sleep Stages Tracking	Yes	Yes	-	Yes	Yes	Yes
Resolution	466	240x240	466x466 pixels	420x485	240x240	466x466
Screen Resolution	466*466 pixels	240x240 px	-	420x485	240x240	466x466
Smart Notifications	Yes	Yes	Yes	Yes	Yes	-
Case Material	zinc alloy	Zinc Alloy	-	zinc alloy	-	-
Music Controls	Yes	Yes	Yes	-	Yes	Yes
Call Handling	answer, reject, and make calls directly from your wrist	-	-	-	Yes	bluetooth phone call functionality
Type Of Home Diagnostic Monitor	Smartwatch	Smartwatch	Smartwatch	smartwatch	Smartwatch	smartwatch