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Crest

Crest CR4 Dive dive computer

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Features of Crest CR4 Dive

Product description of Crest CR4 Dive dive computer

Description summary

Explore the depths with the compact CREST CR-4 Dive Computer. Featuring 3 versatile modes—Diving (Air/Nitrox), Freediving, and Gauge—it´s perfect for recreational divers. Manage settings and access your logbook via the intuitive phone app, connected through Bluetooth. With a backlit display, rechargeable battery, and a robust 100m depth limit, the CR-4 offers over 900 dives of log storage. Its durable stainless steel bezel and tempered glass lens ensure reliability. Dive smarter, dive safer

CREST CR-4 DIVE COMPUTER.

The Crest CR-4 is a great yet small dive computer/swatch that features 3 dive modes, Diving (air or nitrox), Freediving, and Gauge.

These modes and their respective user settings are changeable on the computer itself or the handy phone app which also serves as a logbook.

With a backlit display and a relatively modest form factor this is bound to become a very popular choice for the avid recreational diver! FEATURES.

3 Modes:

Freediving, Diving & Gauge.

Rechargeable Lithium-ion battery.

300+ charge cycle.

Fast charging (up to 85% in 1hr).

Residual Nitrogen Time resettable.

Dive settings and logs resettable.

Bluetooth connectivity to phone app.

CREST CR-4 SPEC.

Operating Depth Limit.

100 meters / 330 feet.

Multiple Modes.

Scuba, Gauge, Apnea Mode.

Air and Nitrox.

Oxygen 21%~56%.

Algorithm.

Buhlmann ZH-L16C.

Safety Factor.

Conservative, Normal, Aggressive.

Battery Type.

Rechargeable Battery (300+ charge cycle).

Battery Life (Dive Mode).

25 dives with backlight on.

Battery Life (Standby mode).

up to 3 months.

Dive Log storage.

900+.

Screen resolution.

110 x 110 PIXEL.

Display size.

2.9cm / 1.14″.

Weight.

95g±5g.

Bezel and Button.

316 stainless steel.

Lens.

K1 tempered glass.

Straps.

22MM anti-allergic silicone.

Temperature Displayed.

0°C ~ 40°C (32°F ~ 104°F).

Operating Temperature.

-5°C ~ 40°C (23°F ~ 104°F).


Specifications

Manual

Technical specifications of Crest CR4 Dive

  • Weight

    95g±5g

  • Display Type

    Backlit Display

  • Screen Size

    2.9cm / 1.14″

  • Resolution

    110x110 Pixel

  • Bezel Material

    316 Stainless Steel

  • Lens Material

    K1 Tempered Glass

  • Wireless Connectivity

    Bluetooth

  • Battery Type

    Rechargeable Battery

  • Thermometer

    Yes

  • Water Resistance Rating

    100 Meters / 330 Feet

  • Color

    Black

  • Recommended Use

    Diving

  • Features

    Nitrox compatible

  • Features

    Rechargeable batterie

Features of Crest CR4 Dive

Color Black

Color

Black

Recommended Use Diving

Recommended Use

Diving

Features Nitrox compatible

Features

Nitrox compatible

Rechargeable batterie

Rechargeable batterie

Key differentiators

Bluetooth connectivity for managing settings and logbook via a smartphone app.

Rated for a maximum operating depth of 100 meters / 330 feet.

Rechargeable battery with fast-charging, providing power for 25 dives with the backlight on.

Robust construction with a 316 stainless steel bezel and K1 tempered glass lens.

Versatile three-mode operation: Diving (Air/Nitrox), Freediving, and Gauge.

Technology in Crest CR4 Dive dive computer

Energy rating

Warnings

5 / 5

1 Reviews

What our customers are saying about Crest CR4 Dive dive computer

Crest CR4 Dive dive computer

Correct quality-price ratio

2024/05/07

Quel

Genial

Write a review about this product

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Write your answer

The question has already been answered, thank you very much for trying to help another customer. We will count on you for future questions.

Include AI Generated questions and answers

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

What are the main features of the Crest CR-4 dive computer?

Answer of Generated by AI and verified

The Crest CR-4 is a versatile dive computer featuring three primary modes: Diving (with Air or Nitrox), Freediving, and Gauge. It has a rechargeable battery, a backlit display for clear visibility, and Bluetooth connectivity to sync with a phone app for managing settings and your dive log. The unit is built with a durable 316 stainless steel bezel and a K1 tempered glass lens.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

Can I manage my dive logs and settings with my phone?

Answer of Generated by AI and verified

Yes, the Crest CR-4 features Bluetooth connectivity that allows you to connect the dive computer to a dedicated phone app. Through the app, you can conveniently manage your device settings and access your dive logbook.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

What materials are used to make the Crest CR-4?

Answer of Generated by AI and verified

The Crest CR-4 is constructed for durability and comfort.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

Is the Crest CR-4 dive computer worth the investment for a beginner diver?

Answer of Generated by AI and verified

The Crest CR-4 dive computer offers versatile modes and robust features like a backlit display and Bluetooth connectivity, making it a valuable tool for beginner divers looking to enhance their diving experience.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

What dive modes are available on the Crest CR-4?

Answer of Generated by AI and verified

The Crest CR-4 supports three different modes to suit various underwater activities: Diving mode (for both Air and Nitrox up to 56% oxygen), Freediving mode, and a standard Gauge mode.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

What is the battery life of the Crest CR-4 dive computer?

Answer of Generated by AI and verified

The rechargeable battery in the Crest CR-4 provides power for up to 25 dives with the backlight on. In standby mode, the battery can last for up to 3 months on a single charge.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

Is the Crest CR-4 compatible with Nitrox?

Answer of Generated by AI and verified

Yes, the Crest CR-4 is Nitrox compatible. You can set the oxygen percentage from 21% up to 56% for your dives.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

What is the maximum depth rating for the Crest CR-4?

Answer of Generated by AI and verified

The Crest CR-4 has an operating depth limit of 100 meters, which is equivalent to 330 feet.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

How many dives can be stored in the logbook?

Answer of Generated by AI and verified

The Crest CR-4 has a substantial dive log storage capacity, allowing you to save over 900 dive records on the device.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

Is the Crest CR-4 suitable for recreational diving?

Answer of Generated by AI and verified

Yes, the Crest CR-4 is an excellent choice for recreational divers. It supports both air and Nitrox, has a clear backlit display, and includes user-friendly features like Bluetooth connectivity for logbook management, making it well-suited for recreational diving activities.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

Can I use the Crest CR-4 for freediving?

Answer of Generated by AI and verified

Absolutely. The Crest CR-4 includes a dedicated Freediving mode (Apnea Mode) in addition to its Scuba and Gauge modes, making it a versatile computer for both scuba divers and freedivers.

* Generated by AI based on customer and product data

2026-09-09

Generated by AI and verified

Crest CR4 Dive dive computer

What is the difference in max depth rating between the Crest CR-4 and the Cressi King?

Answer of Generated by AI and verified

The Crest CR-4 has a maximum operating depth rating of 100 meters (330 feet). In comparison, the Cressi King dive computer is rated for a greater depth, with a maximum of 120 meters.

* Generated by AI based on customer and product data

2026-07-29

Generated by AI and verified

Crest CR4 Dive dive computer

Is the Crest CR-4 Dive Computer suitable for beginners?

Answer of Generated by AI and verified

Yes, the Crest CR-4 is an excellent choice for recreational divers, including beginners. It features three straightforward modes: Diving (Air/Nitrox), Freediving, and Gauge. The settings can be managed through an intuitive phone app, which also serves as your logbook, making it user-friendly for those new to dive computers.

* Generated by AI based on customer and product data

2026-07-29

Generated by AI and verified

Crest CR4 Dive dive computer

What are the main dive modes available on the Crest CR-4?

Answer of Generated by AI and verified

The Crest CR-4 Dive Computer is equipped with three versatile modes to suit different underwater activities: Diving (compatible with both Air and Nitrox), Freediving, and a standard Gauge mode.

* Generated by AI based on customer and product data

2026-07-29

Generated by AI and verified

Crest CR4 Dive dive computer

What is the battery life of the Crest CR-4 dive computer?

Answer of Generated by AI and verified

The Crest CR-4 features a rechargeable lithium-ion battery. On a full charge, it provides enough power for approximately 25 dives with the backlight on.

* Generated by AI based on customer and product data

2026-07-29

Generated by AI and verified

Crest CR4 Dive dive computer

Can I use the Crest CR-4 for Nitrox diving?

Answer of Generated by AI and verified

Yes, the Crest CR-4 is Nitrox compatible. Its 'Diving' mode supports both standard air and Nitrox mixes with an oxygen percentage from 21% to 56%, making it a versatile option for recreational divers.

* Generated by AI based on customer and product data

Ask a technical question about this product

Frequently bought together
Best sellers

Use cases

Recreational Scuba Diving 90% Fit

This computer is a versatile and reliable upgrade for regular divers. It supports both standard air and Nitrox (up to 56% oxygen), and its Buhlmann ZH-L16C algorithm with adjustable safety factors allows for personalized dive planning.

Diving (Air/Nitrox) mode,Buhlmann ZH-L16C algorithm,Adjustable safety factors

Freediving 80% Fit

With a dedicated Freediving mode, this computer provides essential data for breath-hold divers. The clear backlit display ensures readability at a glance, and the comfortable anti-allergic silicone strap offers a secure fit during dynamic movements.

Freediving mode,Backlit Display,22MM anti-allergic silicone strap

Dive Data Logging and Analysis 95% Fit

For divers who meticulously track their performance, this computer offers a large dive log storage of over 900 dives. Bluetooth connectivity allows for easy syncing of dive data to other devices for detailed post-dive analysis and sharing.

900+ dive log storage,Bluetooth wireless connectivity,Rechargeable battery

Dive Travel 85% Fit

This is a great all-rounder for dive travel, thanks to its rechargeable battery with fast-charging capabilities, reaching up to 85% in one hour. The long standby life of up to 3 months ensures it's ready to go even after periods of inactivity.

Rechargeable Lithium-ion battery,Fast charging (up to 85% in 1hr),Up to 3 months standby battery life,Durable K1 Tempered Glass lens

Best for

Best for Data-Driven Divers

Wireless connectivity: Bluetooth, Dive log storage: 900+ dives

A Reliable Upgrade for Regular Divers

Offering versatile modes including Air, Nitrox, and Freediving, plus a durable build with a stainless steel bezel and tempered glass, this is a solid performance upgrade from a basic computer.

Dive modes: Diving (Air/Nitrox), Freediving, and Gauge, Bezel material: 316 Stainless Steel, Lens material: K1 Tempered Glass

Ideal for Dive Professionals

Built for frequent use with a rechargeable battery rated for over 300 charge cycles and a robust Buhlmann ZH-L16C algorithm, it provides reliable performance and extensive logging capabilities.

Battery charge cycles: 300+ charge cycle, Algorithm: Buhlmann ZH-L16C, Dive log storage: 900+ dives

Benefits

FunctionalSupports Multiple Dive Styles

This dive computer is equipped for various underwater activities, offering modes for standard air/Nitrox diving, freediving, and a simple gauge mode. This versatility allows divers to use a single device across different types of dives.

Dive modes: Diving (Air/Nitrox)

Freediving

and Gauge

Features: Nitrox compatible

Rechargeable batterie

Oxygen percentage range: 21%~56%

FunctionalEasily Sync and Store Dive Logs

With Bluetooth connectivity, you can wirelessly sync your dive data to other devices for analysis and sharing. The computer has a large internal memory, capable of storing over 900 dive logs, ensuring you have a comprehensive record of your underwater adventures.

Wireless connectivity: Bluetooth

Dive log storage: 900+ dives

FunctionalBuilt for Underwater Environments

Constructed with a 316 stainless steel bezel and a K1 tempered glass lens, this dive computer is designed for durability. It is rated for water resistance up to 100 meters, making it a reliable tool for recreational diving.

Material: 316 stainless steel

K1 tempered glass

22MM anti-allergic silicone

Bezel material: 316 Stainless Steel

Lens material: K1 Tempered Glass

FunctionalRechargeable and Ready for Your Next Dive

Featuring a rechargeable lithium-ion battery, this dive computer eliminates the need for disposable batteries. It supports fast charging, reaching up to 85% in just one hour, and provides enough power for up to 25 dives with the backlight on.

Rechargeable battery type: Lithium-ion

Fast charging: up to 85% in 1hr

Battery life: 25 dives with backlight on

FunctionalAdjust Safety Margins to Your Dive Plan

This dive computer allows you to adjust the safety factor of the dive algorithm, with options for Conservative, Normal, and Aggressive settings. This feature enables you to tailor the computer's decompression calculations to your personal comfort level and dive plan.

Safety factor: Conservative

Normal

Aggressive

Algorithm: Buhlmann ZH-L16C

Ideal buyer profiles

The Tech-Savvy Diving Enthusiast

This diver values technology that enhances their underwater experience and allows for easy data tracking. They want a reliable, feature-rich computer that syncs with their devices to analyze and share their dive logs.

The Crest Cr4 is an excellent match, offering Bluetooth connectivity for seamless data syncing. With a storage capacity for over 900 dives, a fast-charging rechargeable battery, and versatile modes including Nitrox and Freediving, it meets all the demands for a modern, connected diving experience.

The Adventurous Hobbyist Diver

This individual dives regularly for recreation and exploration, often in varied conditions. They need a durable, easy-to-use computer that provides all essential dive information clearly and reliably, without being overly complex.

This dive computer is built for adventure with its 316 stainless steel bezel and K1 tempered glass lens. The backlit display ensures readability, while the Buhlmann ZH-L16C algorithm provides dependable calculations. Its 100-meter depth rating is more than sufficient for recreational diving.

The Professional Diver

This user, such as a divemaster or instructor, requires a robust and highly functional tool for daily use. Key needs include customizable safety settings, extensive log capacity, and the ability to reset data for different clients or courses.

The ability to reset residual nitrogen time and dive logs makes it practical for instructional use, while its durable materials ensure it can withstand frequent dives.

Competitive features

When evaluating dive computers for recreational use, the Crest CR-4 stands out for its blend of essential features and modern connectivity. It offers a compact design with a clear, backlit display, making it a strong contender against established models like the Mares Smart and Aqualung I300c. While many competitors focus on a specific niche, the CR-4 provides versatility with its Diving, Freediving, and Gauge modes, all managed through a convenient Bluetooth-connected phone app.

Where it excels

The Crest CR-4 excels in connectivity and data management, featuring Bluetooth for seamless connection to a phone app. This allows for easy access to your logbook and settings, a modern convenience not always standard in this category. With three distinct operating modes (Diving, Freediving, and Gauge), the CR-4 offers notable versatility for recreational divers who may engage in different types of underwater activities. Built with a durable stainless steel bezel and a tempered glass lens, the CR-4 is constructed for reliability, offering robust materials that inspire confidence during dives. The unit includes a rechargeable battery, providing a convenient alternative to the user-replaceable batteries found in many competing models.

Consider alternatives if...

Verdict

The Crest CR-4 Dive Computer is an excellent choice for recreational divers seeking a modern, versatile, and user-friendly device. Its combination of Bluetooth connectivity, multiple dive modes, and durable construction makes it a highly competitive option. While it may not have the specialized features of more advanced or technical computers, it provides all the essential functions for recreational air and Nitrox diving in a compact and reliable package. Its intuitive app-based management system is a significant advantage for divers who value convenience and easy log tracking.

Specs comparison

Favorite On Favorite Off
Material316 stainless steel, K1 tempered glass, anti-allergic silicone316 Stainless Steel
Battery Life25 dives with backlight onup to 14 days
Dive ModesDiving (Air/Nitrox), Freediving, GaugeScuba, Freedive, Gauge
Max Depth Rating100 meters / 330 feet100 m
Water Resistance100 Meters / 330 Feet10 ATM
Weight95g±5g80 g

Specs vs competitors

Favorite On Favorite Off
Favorite On Favorite Off
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Material316 stainless steel, K1 tempered glass, 22MM anti-allergic siliconestainless steel-Stainless SteelMineral Glass-
Battery Life25 dives with backlight onlong-User-ReplaceableLong-lasting BatteryUp to 2 years
Dive ModesDiving (Air/Nitrox), Freediving, and GaugeAir, Nitrox, Gauge (Profondimeter), ApneaAir, Nitrox, Gauge, FreeApnea, SCUBA, GaugeMultiple modes: Dive (Air/Nitrox), Freediving, Gauge, and OffAir, Nitrox, Gauge, Free Diving
Max Depth Rating100 meters / 330 feet-100m/330 ft100 Meters / 330 Feet120 M120 meters (394 feet)
Water Resistance100 Meters / 330 Feet--100 Meters / 330 Feet120 M-
Wireless ConnectivityBluetoothOptional Bluetooth connectionBluetooth-Bluetooth-
Display Size2.9cm / 1.14″high-visibility UFDS screenSegment47 mm35 MmSegmented LCD
Battery TypeRechargeable BatteryUser-replaceable Batteriesuser-changeable batteryCr2450-user-replaceable battery
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