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Description
Description
Lighter Design. Limitless Performance.
The Sirius L is the streamlined evolution of Mares’ high-performance dive computer — built for divers who want advanced capability without extra bulk. Lightweight, powerful, and easy to use, it delivers precision where it matters most.
Clear segment LCD display for sharp, easy-to-read data
Air, Nitrox, Multigas (up to 3 mixes), Freedive & Bottom Timer modes
Bühlmann ZH-L16C algorithm with customizable gradient factors
Safety Stop+ for smarter ascent guidance
Bluetooth sync with Mares & SSI apps
User-replaceable battery (up to 100 dives per cycle)
Advanced performance. Streamlined design. Ready for every dive.
Features
Features
- Dive Modes: Air, Nitrox, Multigas Nitrox, Freedive, Bottom Timer
- Bühlmann ZH-L16C algorithm with customizable gradient factors
- Multigas capability: up to 3 gases
- Safety Stop and Safety Stop+ options
- Bottom Timer mode with resettable average depth and stopwatch
- Decompression dive planner with user-adjustable surface interval
- Logbook capacity for up to 100 dives with graphs (via Mares App)
- User-replaceable battery (CR2450) – approx. 100 dives
- Integrated Bluetooth for app sync and firmware updates
- Two-button navigation for intuitive use
- Strap easily replaceable with colour straps or bungee mount (sold separately)
Specifications
Specifications
| Battery Type | CR2450 |
|---|---|
| Battery Duration | Approx. 200–300 hours of diving |
| Nitrox Use | EAN 21% to 99% |
| Max. Displayed Depth | 100 m / 328 ft |
| Ascent Rate Indicator | Yes (m/min – ft/min) |
| Memory Capacity | > 200 hrs |
| Profile Sampling Rate | 5 s |
| Display | Segment Display |
| Gas Switching | Yes |
| Stopwatch | Yes |
| Watch Function | Yes |
| Dual Time | No |
| Daily Alarm | Yes |
| Plan Mode | Yes |
| Metric / Imperial Units | Selectable |
| Fresh & Seawater Settings | Yes |
| Residual Nitrogen Reset | Yes |
| Audible Alarms Disable Option | Yes |
| Uncontrolled Ascent Exclusion | Yes |
| Altitude Adjustment | Yes |
| Upgradeable Software | Yes |
| Air Integrated | No |
| Dive Hours per Charge | 200–300 hrs |
| Graphic & Numeric Tank Pressure | No |
| USB Charger | No |
Payment & Security
Payment methods
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WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
Why do I need my own dive computer?
A dive computer tracks the actual depth and time profile you have dived and the tissue loading that follows from it, which is personal to you. A rented computer has no record of your recent diving, and swapping models each trip means relearning the display and menus when you should be focused on the dive. Owning one you know well is a genuine safety and comfort improvement.
Can two divers share one dive computer?
No. A computer only tracks the profile of the diver actually wearing it, and even buddies who stay together do not follow identical depth and time profiles. Every diver needs their own computer, and passing one between divers or between dives is unsafe.
What does conservatism mean on a dive computer?
Conservatism settings make the computer's calculations more cautious, shortening allowed bottom times and adding margin beyond the base algorithm. Divers commonly add conservatism for factors such as cold, hard work, fatigue, or repetitive multi-day diving. How and when to adjust it is covered by your training and your computer's manual, so set it before you get in the water and follow what your computer tells you during the dive.
What kind of battery does a dive computer use?
Broadly there are two types: user-replaceable batteries, often a coin cell that you or a shop swap along with resealing an o-ring, and sealed rechargeable batteries that charge from a cable or dock. Neither is universally better, as replaceable cells are convenient on remote trips while rechargeables avoid ever opening the case. Follow the manual exactly for any battery change, because an improperly seated o-ring or case is the usual cause of a flooded computer.
Do I need to do anything special for altitude diving or flying after diving?
Yes, both change the picture, and both are governed by your training agency's guidance and your computer's instructions rather than any casual rule of thumb. Many computers have an altitude setting that must be configured before diving at elevation, and most display a no-fly or surface-interval countdown after a dive. Follow your computer and your training, and ask a dive professional or a dive-medicine specialist if you are unsure.
How do I care for a dive computer?
Rinse it in fresh water after every dive day, paying attention to the buttons and around any sensor openings where salt crystals form, and let it dry fully before storing. Keep it out of prolonged direct sun and extreme heat, and avoid pressing buttons while sand is on the case. Inspect the strap or bungee often, because a failed strap loses far more computers than a failed computer does.
What is the difference between wrist, console, and air-integrated dive computers?
A wrist computer is worn like a watch and read by raising your arm, while a console computer sits at the end of a hose with your other gauges. Air integration means the computer also displays cylinder pressure, either through a hose or from a wireless transmitter on the first stage, and often estimates remaining gas time. All of them run a decompression algorithm, so the real difference is where you read the information and how much of it you get.
