Technical sheet

Mares Sirius dive computer

Name: Mares Sirius dive computer
Brand: Mares
SKU: 139684401
Price: 399.49 EUR
Availability: InStock
Rating: 5 (3 reviews)

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3 Reviews

4 Questions

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Features of Mares Sirius

Product description of Mares Sirius dive computer

Description summary

Discover the MARES Sirius, a watch-style dive computer where elegance meets powerful technology. Perfect for both recreational and extended range divers, it boasts a high-resolution MIP color display and a ZH-L16C algorithm. Manage up to five Nitrox and Trimix gases, monitor tank pressure wirelessly with the optional transmitter, and connect to your smartphone via Bluetooth. With its refined style, wireless charging, and changeable strap, the Sirius is the ultimate accessory for your adventures, both in and out of the water

The Sirius is a watch-style dive computer that perfectly combines technology and elegance. The characteristics of this dive computer feature top-of-the-range technology both for the recreational and Extended Range diver. The recreational diver can see dive data in a simple, intuitive way, with the possibility of integrating tank data using the optional tank module. The Extended Range diver can insert up to five nitrox and trimix mixes. Thanks to the changeable strap, it can be used with any suit thickness Mares designed the new Sirius watch-style dive computer with the aim of perfectly combining technology and elegance. The characteristics of this dive computer feature top-of-the-range technology both for the recreational and Extended Range divers. The recreational diver can see a simple screen, with the possibility of reading tank data thanks to the optional tank module. The Extended Range diver can insert up to five nitrox and trimix mixes to manage technical dives. The interchangeable strap allows the Extended Range diver to use any suit thickness. Its refined style makes the Sirius the perfect accessory, even out of the water.

Features:

- ZH-L16C algorithm with gradient factors and predictive multigas
- Nitrox and trimix capable, up to 5 gases
- MIP color, high-resolution display
- Full tilt digital compass with bearing memory and stopwatch
- Hoseless tank data integration for up to five transmitters
- Color coded tank pressure for at-a-glance readability
- Bottom timer mode with resettable average depth and stopwatch
- Decompression dive planner with additional surface interval function
- 100 dive logbook with multiple graphs
- Tissue saturation and dive profile graph
- Smart battery management system with 30 hours dive time per full charge (without the use of the transmitter)
- Bluetooth connection for direct connection to a smartphone
- Underwater menu allows certain settings to be changed during the dive
- Future deco and runaway deco alarm
- Three watch faces plus color options
- Changeable strap for use with any wetsuit thickness
- Wireless charging base

Specifications:

- Material: Rechargeable 200 Mah
- Battery Duration: 30 Hours Dive Time* / 500 Recharge Cycles
- Nitrox Use: Ean From 21% To 99%
- Trimix Use: Hypoxic, Normoxic
- Max Displayed Depth: 150m / 492ft
- Ascent Rate Indicator (M/Min - Ft/Min): Yes
- Memory Capacity: 100hr
- Profile Sampling Rates: 5s
- Gas Switching: Yes
- Stopwatch: Yes
- Watch: Yes
- Dual Time: Yes
- Daily Alarm: Yes
- Plan Mode: Yes
- Choice_Met_Imp: Yes
- Fresh And Seawater Settings: Yes
- Resid_Nitro_Reset: Yes
- Option To Exclude Audible Alarms: Yes
- Exclusion Of ´´Uncontrolled Ascent´´: Yes
- Altitude Adjustment: Yes
- Upgradeable Software: Yes
- Air Integrated: Yes
- Dive Hours Per Charge: 15hr / 30hr
- Graphic And Numeric Tank Pressure: Yes

Specifications

Manual

Technical specifications of Mares Sirius

Display Type

MIP Color
Compass

Yes
Wireless Connectivity

Bluetooth
Battery Type

Rechargeable
Color

Silver
Recommended Use

Diving
Features

Rechargeable batterie

Features of Mares Sirius

Color Silver

Color

Silver

Recommended Use Diving

Recommended Use

Diving

Features Rechargeable batterie

Features

Rechargeable batterie

Key differentiators

Full-tilt digital compass with bearing memory and stopwatch functions.

High-resolution MIP color display for superior clarity.

Hoseless air integration for up to five transmitters with color-coded pressure display.

Rechargeable battery with up to 30 hours of dive time and wireless charging.

Versatile gas management for up to 5 Nitrox and Trimix mixes.

Technology in Mares Sirius dive computer

Energy rating

Warnings

5 / 5

3 Reviews

What our customers are saying about Mares Sirius dive computer

This Mares dive computer offers a bright, clear display with good underwater visibility, even in darker conditions with its backlight. Buyers praise its quality and value. The watch-style design is a strong competitor to other brands. It seamlessly integrates with the SSI app, and for full functionality, consider the LED Tank Module 2.0 transmitter

awesome

2026/06/01

i love mares!!!i love diveinn!!! best quality!!!best shipping service!!!best price!!!

Mares sirius

2025/11/19

TOM

Despite some comments about poor underwater visibility, the purchase turned out to be excellent. The Mares Sirius has good visibility while diving; only when it's really dark can you turn on the backlight and it's fine. I recommend purchasing the LED Tank Module 2.0 transmitter, which gives you full access to the computer's functions. It integrates seamlessly with the SSI app. If you need a watch-style dive computer at a good price, I recommend it.

Sirius

2025/07/23

Rafael Rivera

So far, everything is great until we try it underwater and see how it responds.

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Include AI Generated questions and answers

2026-07-03

Generated by AI and verified

Is the Mares Sirius Dive Computer suitable for both new and experienced divers?

Answer of Generated by AI and verified

Yes, the Mares Sirius is designed for a wide range of users. For recreational divers, it offers a simple, intuitive display. For more advanced Extended Range divers, it supports technical dives by allowing the management of up to five nitrox and trimix mixes.

* Generated by AI based on customer and product data

2026-07-03

Generated by AI and verified

What is the maximum depth rating and battery life of the Mares Sirius?

Answer of Generated by AI and verified

The Mares Sirius has a maximum depth rating of 150 meters (492 feet). The rechargeable battery provides up to 30 hours of dive time on a full charge.

* Generated by AI based on customer and product data

2026-07-03

Generated by AI and verified

What dive modes are supported by the Mares Sirius?

Answer of Generated by AI and verified

The Mares Sirius is a versatile dive computer that is capable of handling both Nitrox and Trimix, supporting up to five different gas mixes to accommodate technical diving needs.

* Generated by AI based on customer and product data

2026-07-03

Generated by AI and verified

Can I use the Mares Sirius for technical diving with multiple gas mixes?

Answer of Generated by AI and verified

Yes, the Mares Sirius is designed for technical divers. It allows you to program and manage up to five different gas mixes, including both Nitrox and Trimix, for your extended range dives.

* Generated by AI based on customer and product data

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Frequently bought together

Best sellers

Use cases

Technical Diving 100% Fit

With support for up to five gases, including both Nitrox and Trimix (Hypoxic and Normoxic), this computer is a versatile tool for complex, planned decompression dives. The ZH-L16C algorithm and decompression dive planner provide the necessary data for safe technical diving profiles.

Trimix and Nitrox capable,Manages up to 5 gases,Decompression dive planner,ZH-L16C algorithm,Max depth rating: 150m

Advanced Recreational Diving 90% Fit

For recreational divers looking to upgrade, this computer offers a feature-rich experience with hoseless air integration for streamlined diving. The high-resolution color display and Bluetooth connectivity for logbook syncing provide enhanced functionality and a great post-dive experience.

Hoseless tank data integration,High-resolution MIP color display,Bluetooth connectivity,100-dive logbook capacity,Rechargeable battery

Dive Travel 80% Fit

As a watch-style computer with dual time and daily alarm functions, it's convenient for travel, worn both in and out of the water. The wireless charging and fresh/seawater settings make it adaptable to various dive destinations without needing extra cables or manual adjustments.

Watch-style design,Dual time function,Wireless charging,Fresh and seawater settings,Changeable strap

Data-Focused Diving and Training 80% Fit

Divers who meticulously track their performance will benefit from the 100-hour logbook, tissue saturation graphs, and Bluetooth data transfer for post-dive analysis. The integrated compass and various alarms also serve as excellent tools for navigation training and improving dive safety awareness.

100hr memory capacity,Tissue saturation and dive profile graph,Bluetooth connection,Integrated compass,Future deco and runaway deco alarm

Best for

Best for Advanced Technical Diving

With support for up to 5 gases, including Nitrox and Trimix, and a max depth rating of 150m, this computer provides the critical functionality required for complex, professional dives.

Dive modes: Nitrox and trimix capable, up to 5 gases; Max depth rating: 150m / 492ft; Number of gases managed: 5

Ideal for the Connected Diver

Featuring Bluetooth connectivity, a 100-dive logbook, and wireless charging, this device allows for seamless data syncing and management of your dive profiles.

Wireless connectivity: Bluetooth; Dive logbook capacity: 100 dive logbook; Wireless charging: Yes

A Solid Upgrade for Regular Divers

This versatile, feature-rich computer offers hoseless air integration and a clear color display, enhancing the diving experience for those looking to advance their gear.

Air integrated: Yes; Display type: MIP Color (Description: 'high-resolution MIP color display'); Recommended use: Diving

Benefits

FunctionalSupports Advanced and Technical Dives

Accommodates a wide range of diving disciplines with its versatile dive modes. This computer is capable of managing nitrox and trimix, with support for up to 5 different gases, making it a flexible choice for both recreational and more technical divers.

Dive modes: Nitrox and trimix capable

up to 5 gases

Nitrox use: Ean From 21% To 99%

Trimix use: Hypoxic

Normoxic

Number of gases managed: 5

FunctionalEnjoy Hassle-Free Charging and Extended Dive Time

Forget about disposable batteries with a rechargeable system that offers up to 30 hours of battery life. The inclusion of wireless charging provides a simple and convenient way to power up your device between dives, ensuring it's always ready for your next underwater adventure.

Battery life: 30 hours

Wireless charging: Yes

Dive hours per charge: 15hr / 30hr

FunctionalClear Display and Critical Alerts for Safer Dives

Stay informed throughout your dive with a high-resolution MIP color display that provides excellent readability. The computer enhances safety with multiple alarm functions, including future deco and runaway deco alarms, to help you stay within safe limits.

Alarm function: Yes

Future deco and runaway deco alarm: yes

Color coded tank pressure: Yes

FunctionalFunctions as a Stylish Watch for Daily Wear

This dive computer doubles as a practical and stylish timepiece for everyday use. It features standard watch functions, including a stopwatch and daily alarm, and allows for personalization with changeable straps and multiple watch faces.

Type: watch-style

Watch function: Yes

Changeable strap: Yes

Three watch faces plus color options: Yes

Daily alarm: Yes

Ideal buyer profiles

The Tech-Savvy Diving Enthusiast

This diver is passionate about integrating the latest technology into their hobby. They value data, connectivity, and a customizable user experience to analyze and enhance their dives.

The Mares Sirius is an ideal match with its Bluetooth connectivity for easy data transfer, hoseless tank data integration, and a 100-dive logbook. The high-resolution MIP color display, multiple watch faces, and upgradeable software provide the advanced, customizable experience this diver seeks. Support for Nitrox and Trimix with up to 5 gases caters to their desire for versatile and feature-rich equipment.

The Professional Diver

This individual relies on their equipment for work, which could include instruction, guiding, or technical diving. For them, reliability, comprehensive dive planning, and robust safety features are non-negotiable.

We recommend the Sirius for professionals due to its robust feature set, including the ZH-L16C algorithm, a decompression dive planner, and support for both Nitrox and Trimix. Critical safety features like the future deco and runaway deco alarms, combined with a 150m depth rating and hoseless air integration, provide the reliability and control required for professional use.

The Adventurous Hobbyist Diver

This diver is experienced and regularly seeks new underwater challenges, from deep wrecks to multi-day dive trips. They need a capable, all-in-one computer that can grow with their skills and handle various diving scenarios without being overly complex.

The Sirius meets the needs of the adventurous hobbyist with its watch-style convenience and powerful capabilities. It manages up to 5 gases, including Nitrox and Trimix, making it suitable for a wide range of dives. The rechargeable battery offers up to 30 hours of dive time, while the high-resolution color display and intuitive underwater menu ensure crucial information is always easy to read, allowing them to focus on the adventure.

Competitive features

When choosing a dive computer, divers are often faced with a wide array of options that balance features, technology, and price. The Mares Sirius Dive Computer enters this competitive field as a watch-style device that blends advanced functionality with everyday elegance. We've compared it against several popular models, including the Ratio Idive Color Easy, Scubapro Luna 2.0, and Aqualung I200c, to see how it stacks up in terms of capabilities and suitability for different types of divers.

Where it excels

The Mares Sirius stands out with its support for both recreational and Extended Range diving, accommodating up to five Nitrox and Trimix gas mixes—a feature not commonly detailed for many competitors in this price range. It features a high-resolution MIP color display, offering superior clarity and readability compared to standard LCD screens found on some alternative models. With built-in Bluetooth connectivity and wireless charging, the Sirius provides modern conveniences for data syncing and power management that enhance the user experience both in and out of the water.

Consider alternatives if...

The provided comparison data does not offer specifics on key performance metrics like battery life, max depth rating, or materials for any of the models. Divers who prioritize these specific, measurable attributes may need to research detailed technical sheets for each product to make a fully informed decision.

Verdict

The Mares Sirius Dive Computer is an excellent choice for divers seeking a sophisticated, feature-rich device that doesn't compromise on style. Its strength lies in its versatility, capably serving both recreational divers and those venturing into technical diving with Trimix. While the direct comparison data is limited, its combination of a high-resolution color display, multi-gas support, and modern wireless features makes it a compelling option in its category.

Specs comparison

	Mares Sirius dive computer	Mares Genius Dive Computer	Mares Smart Air Dive Computer	Mares Sirius L Dive Computer
Material	Rechargeable 200 Mah	-	Cr2430	-
Alarm Function	Yes	Future Deco And Runaway Deco Alarm (Proprietary)	true	yes
Battery Life	30 hours	40 hours	200-300 Dives Over A Three Year Time Span	200-300 hours of diving
Dive Modes	Nitrox and trimix capable, up to 5 gases	Nitrox and Trimix capable, Up to 5 gases	multi-gas dives, freediving mode	Air, Nitrox, Multigas Nitrox, Freedive, Bottom Timer
Max Depth Rating	150m / 492ft	150m / 492ft	150m / 492ft	100m / 328 ft
Wireless Connectivity	Bluetooth	Bluetooth	hoseless air integration for up to three transmitters	Bluetooth
Compass	Yes	full tilt digital compass	-	-
Display Size	high-resolution	LCD Color Display	<50 mm	Segment Display
Type	watch-style	dive computer	-	wrist
Battery Type	Rechargeable	Rechargeable Batteries	Lithium	CR2450

Specs vs competitors

	Mares Sirius dive computer	Aqualung I300c Dive Computer	Aqualung I330r 2 Bar Dive Computer	Cressi King Dive Computer	Ratio Idive Color Deep Dive Computer	Ratio Idive Color Easy Dive Computer
Material	Rechargeable 200 Mah	-	-	Mineral Glass	Heavy Duty Composite Polymer	Heavy Duty Polymer
Alarm Function	Yes	yes	Audible alarms and high-visibility LED warning light	Visual and audible alarms for enhanced safety	Yes	-
Battery Life	30 hours	-	Rechargeable lithium battery provides long-lasting power for multiple dives	Long-lasting Battery	20 Hr Diving / 1-2 Months Watch-Mode Only	1-2 months
Dive Modes	Nitrox and trimix capable, up to 5 gases	Air, Nitrox, Gauge, Free	Air, Nitrox, Gauge, Free Dive	Multiple modes: Dive (Air/Nitrox), Freediving, Gauge, and Off	Air Nitrox Trimix (normoxic) Gauge Freediving	Air - Nitrox - Gauge - Freediving
Max Depth Rating	150m / 492ft	100m/330 ft	100m / 330 ft	120 M	150 mt / 500 ft	150 mt / 500 ft
Wireless Connectivity	Bluetooth	Bluetooth	Bluetooth 5.0	Bluetooth	Wireless Air Integration	-
Compass	Yes	no	-	Yes	Yes	Yes
Display Size	high-resolution	Segment	-	1.4 inch	1.3 Inch	1.3 Inch
Type	watch-style	-	2-Gauge Console	Dive Computer	wrist	wrist
Battery Type	Rechargeable	user-changeable battery	Rechargeable Lithium	-	Usb Rechargeable Li-ion	USB Rechargeable Li-ion