Product No: 414139


The Mares Genius scuba dive computer caters to the needs of technical divers who utilize Trimix and Nitrox mixtures with multiple changes, allowing for optimization of decompression and bottom times based on gas supply. Its capability to adjust decompression based on the gases used provides significant safety benefits.

The color display is highly visible in all conditions, and the intuitive interface menu with large buttons makes it easy to use. The Mares Genius is an ideal choice for technical divers looking to enhance their diving experience.

Product Information


The Genius Scuba Dive Computer is a versatile tool that enables divers to manage Trimix and Nitrox dives with gas changes. With the capacity to receive data from five high-pressure probes, it allows for integrated gas supply management, optimizing bottom and decompression times based on remaining gas. The computer utilizes the advanced ZH-L16C Decompression Algorithm with 16 fabrics and differentiated ascent speeds based on altitude. Additionally, the Gradient Factor can be modified to customize the decompression curve, and parameters like deep stops can be selected or omitted to limit micro bubble formation.

The Mares Genius features a color display made of scratch-resistant tempered mineral glass with easy-to-reach buttons suitable for use with waterproof gloves. The 2.7-inch diagonal backlit display is protected by scratch-resistant mineral glass and features three horizontal data display zones with a choice of two bands to show foreground data. The resolution is QVGA 320 x 240 with 256,000 colors and brightness of 420 cd/m2.

The computer has two selectable modes: Diving and Gauge-Bottom Timer, making it a useful backup tool in all situations. In Dive Mode, the Mares Genius supports Trimix and Nitrox diving with oxygen levels ranging from 6% to 99%, and it displays all the necessary dive data, including current, average, and maximum depth, time in minutes and seconds, temperature, and decompression calculations. Up to five different gas mixtures can be managed during a dive for optimized decompression and bottom times.

The Mares Genius is equipped with predictive gas change mode, signaling the need for a gas change as the switch altitude approaches. With optional high-pressure probes, users can enter the volume of individual cylinders and monitor actual gas consumption in liters, optimizing gas supply, bottom and decompression times. Once the breathing mixture is selected, the display shows both the partial pressure of O2 and the Maximum Operating Depth (MOD). A compass function is also available, providing magnetic North indication.

For diving at altitude up to 3,700m, the Mares Genius dive computer allows users to set the altitude and automatically calculate decompression. Audible and visual alarms can be customized according to user preferences. In Depth Meter-Bottom Timer Mode, the computer provides pressure data and additional features like a compass, average depth, and stopwatch that can be reset.

The Planner Mode allows users to simulate the decompression of multiple dives and set surface intervals between them. The Mares Genius comes with a Bluetooth connection that communicates directly with the Mares App, or the MySSI App to download logbook data and firmware updates on your smart devices (The Bluetooth connection cannot be used with PC/MAC to transfer data).

The Genius comes with a dedicated clip and USB cable that allows you to download logbook data, and receive firmware updates. Through the use of the Mares Dive Organizer Program (PC) and the dedicated Genius clip and cable, data can be transferred between the Genius and the Dive Organizer Program.

The main features of the Genius scuba dive computer are:

• ZH-L16C algorithm with gradient factors and predictive multigas
• Nitrox and Trimix capable, up to 5 gases
• Full color high resolution display
• Hoseless tank data integration for up to five transmitters
• Color coded tank pressure for easy readability
• Bottom timer mode with resettable average depth and stopwatch
• Decompression dive planner with additional surface interval function

Technical Specifications of the Mares Genius Computer:

• Software: ZH-L16C 16 fabric with Gradient Factor
• Number of Selectable Gases: 5
• Pressure Probe: yes, up to 5
• Trimix: yes
• Nitrox: yes, 21-99% O2
• Modes: Scuba, Gauge
• Maximum operating depth: 150m
• Altitude compensation: manual
• Alarms: Audio/Video selectable
• Interface: optional
• Memory: 1000 hours with sampling every 5"
• Display: 2.7” color LCD
• Battery: Rechargeable


18650 Lithium Ion polymers
Battery duration:
40 hours dive time / 500 recharge cycles
Nitrox use:
EAN from 21% to 99%
Trimix use:
Hypoxic, Normoxic
Max Displayed Depth:
150 m / 492 ft
Ascent Rate Indicator (m/min - ft/min):
Memory capacity:
1000 hr
Profile Sampling Rates:
5 s
TFT Color Display
Gas switching:
Dual Time:
Daily Alarm:
Plan Mode:
Fresh and Seawater Settings:
Option To Exclude Audible Alarms:
Exclusion of "Uncontrolled Ascent":
Altitude Adjustment:
Upgradeable software:
Air Integrated:
Dive Hours per Charge:
40 hr
Graphic and Numeric
Tank Pressure:
USB Charger:



  • Dive Organizer (PC) Web Installer Release 2.29 (Preferred Method of Install)
    This is an updated version of Dive Organizer.

    • Supports the SCR Horizon computer with V0.3 firmware
    • More control regarding database update procedure
    • Increased firmware stability
    • Resolved dive time errors which were experienced with some computer models
    • Resolved asynchronous operations issues
    • Minor improvements

    The Web Installer is the suggested method for installing Dive Organizer. If the target computer is not connected to the internet, please consider downloading the Full Setup program, found here.
    Languages: EN
  • Dive Organizer (PC) Full Setup Release 2.30
    This version of Dive Organizer contains various improvements and corrections.

    • Supports the SCR Horizon computer with V0.3 firmware
    • More control regarding database update procedure
    • Increased firmware stability
    • Resolved dive time errors which were experienced with some computer models
    • Resolved asynchronous operations issues
    • Minor improvements

    The Full Setup version of Dive Organizer if recommended when the target computer is not connected to the internet during installation (with the possibility of updating itself once connected).
    Languages: EN
  • Tender V1.0.2 (Mac) The tender is used to update the firmware on the Genius computer only.
    The tender is used to update the firmware on the Genius computer only.

    For more information on app installation, please see our tutorial: Tender for Mac - DMG Setup

    For more information regarding how to set up Tender for Mac, please see our tutorial:Tender for Mac - Setup - Open Anyway

    For more information regarding a Genius firmware update, please see our tutorial: Tender for Mac - Genius Firmware Update

    For more information regarding a Horizon firmware update, please see our tutorial: Tender for Mac - Horizon FW Update

    For more information regarding updating the Horizon computer from Bootloader, please see our tutorial:Tender for Mac - Updating the Horizon computer from Bootloader
    Languages: EN


  • FW. Genius V1.04.00
    This update includes the following changes:

    • Improved compass calibration procedure
    • Minor bug fixes

    To calibrate your compass, go to COMPUTER SETTINGS > COMPASS CALIBRATION. Enter the code '1234' then perform the figure 8-shaped trajectory shown on the display until the Genius confirms that calibration was successful. Do this away from possible electromagnetic interferences.

    See here for our 'How To' videos: Genius Compass Calibration and Genius Compass Calibration (closed strap)
    Languages: EN


Please follow the instructions contained in the manual. You must read and understand all warnings and instructions in their entirety before using our products. Scuba diving is a hazardous activity, which involves a risk of injury to any and all parts of the body. As with all scuba diving equipment, our products are designed to be used by trained, certified divers only.

Special Disclaimer
A dive computer is an electronic instrument and as such it is not immune to failure. To protect yourself against the unlikely event of a failure, in addition to the dive computer, also use a depth gauge, a submersible pressure gauge, a timer or watch, and dive tables.

Delivery & Returns


Fedex calculated rates for any order under $100 or for any expedited order.
Free shipping on any order over $100.



Any order placed by 12:00 PM EST Monday - Friday (excluding public holidays) will ship within 3 - 5 days. If you’ve placed an order after 12:00 PM EST or on a weekend, your order will process on the next business day. 

Orders placed with expedited shipping will ship out the same day if the orders are placed by 12:00 PM EST Monday – Friday (excluding public holidays)



We are currently unable to ship orders to post office boxes and APO/FPO addresses. We only ship to physical addresses within 48 States in the United States (excludes AK & HI).



Alaska, Hawaii, Virgin Islands, Puerto Rico, Palau, Northern Mariana Islands, Marshall Islands, Guam, American Samoa, Micronesia, or any Armed Forces.



All products may be returned for a full refund to the original payment method, provided

the items are returned to us within 30 days of you receiving the products and are in new 1st quality conditions. 

To initiate a return please reach out to us Monday - Friday 9:00 am - 5:00 pm EST at 1-800-874-3236, or email us at .



Please ensure that any product you wish to return is unused, in its original packaging and has all tags still attached. You agree that it is at the sole and absolute discretion of Mares to determine if the product has been used. Shipping charges on all returns are your responsibility and are not subject to a refund.


  • Returned products must show no signs of use or wear and must be returned in its original packaging (e.g., plastic, clam shell,

mesh bag). All tags are still attached, no scrapes on the products, etc.



Unfortunately, we are not able to exchange products. We are able to refund your initial order, but you will have to place a new order online.