Lighter Design. Limitless Performance. The Sirius L, the streamlined evolution of Mares' high-performance dive computer. Designed for divers who demand power and precision without the extra bulk, the Sirius L combines essential features, intuitive usability, and lightweight comfort.

• Clear Segment LCD Display: Crisp, easy-to-read data thanks to Chip-on-Glass LCD technology—designed for readability even in challenging underwater conditions.
• Multiple Dive Modes: Air, Nitrox, Multigas Nitrox (up to 3 gases), Freedive, and Bottom Timer modes, with features like Safety Stop and Safety Stop+.
• Safety Stop+ Function: In addition to the standard safety stop, Safety Stop+ monitors your ascent and automatically offers an optional extended stop at shallower depths based on dive profile and ascent rate. It’s not mandatory, but adds an extra layer of safety. Ideal for repetitive or deeper dives.
• Precision Decompression: Powered by the trusted Bühlmann ZH-L16C algorithm with customizable gradient factors and multiple personalization levels to match your training and preferences.
• User-Friendly Interface: Navigate with ease using just two buttons, whether on land or underwater.
• Bluetooth Connectivity: Sync directly with the Mares App or SSI App to access your dive logs, monitor progress, and update firmware effortlessly.
• Long Battery Life: Powered by a user-replaceable CR2450 battery with up to 100 dives per cycle.
• Everyday Versatility: Includes time-of-day functions: day & date, wake-up alarm, and countdown timer. A watch for both diving and daily use.

Key Features at a Glance:
• 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 a bungee mount (sold separately)

Facts
Battery type    CR2450
Battery duration    Approx. 200-300 hours of diving
Nitrox use    EAN from 21% to 99%
Max. displayed depth    100m / 328 ft
Ascent rate indicator (m/min - ft/min)    yes
Memory capacity    > 200 hrs
Profile Sampling Rates    5 s
Display    Segment Display
Gas switching    yes
Stopwatch     yes
Watch    yes
Dual Time    no
Daily Alarm    yes
Plan Mode    yes
Choice of Metric / Imperial units    yes
Fresh and Seawater Settings    yes
Residual Nitrogen Reset    yes
Option To Exclude Audible Alarms    yes
Exclusion of "Uncontrolled Ascent"    yes
Altitude Adjustment    yes
Upgradeable software    yes
Air integrated    no
Dive Hours per Charge    200-300 hrs
Graphic and Numeric Tank Pressure    no
USB Charger    no