The Sirius L is Mares’ lightweight dive computer, combining performance and simplicity. With a clear LCD display, multiple dive modes, Bluetooth connectivity, and the trusted Bühlmann algorithm, it offers precision and ease in a compact design. Features like Safety Stop+, two-button navigation, and a user-replaceable battery make it ideal for all levels of diving.

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)

Specifications:

• Battery type: CR 2450
• 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_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: no
• Dive Hours per Charge: 200-300 hrs
• Graphic and Numeric Tank Pressure: no
• USB Charger: no

SIRIUS HUNTER – The Ultimate Spearfishing and Freediving Computer

The Mares SIRIUS HUNTER is a rugged spearfishing dive computer designed for passionate underwater hunters.

Built to perform in every environment, it combines robust construction, advanced freediving features, and intuitive operation — the ideal companion for both apnea training and deep-sea adventures.

Key Features

• Extremely robust build – reinforced case, high-resistance materials, and tactile buttons for use in any underwater hunting condition
• Large, clear mineral glass display – 1.3" diagonal (33 mm), chip-on-glass technology for optimal visibility
• Simple two-button menu – fast, intuitive navigation, even with gloves
• Freediving training & pool functions – chrono, countdown, lap timer, silent mode for full concentration
• Deep sequential alarms – developed for advanced equalization techniques
• Comprehensive freedive logbook – records up to 10 hours of profile at 0.5-second sampling rate; visualize dives in the Mares/SSI App
• Bluetooth connectivity – update firmware, upload dives, and review graphs directly on your smartphone
• User-replaceable battery (CR2450) – 200–300 hours of use
• Interchangeable straps – replace with bungee (sold separately)
• Daily use watch functions – date, time, alarm, time zone

Why choose the SIRIUS HUNTER

Whether you’re training for apnea performance or exploring deep spearfishing grounds, the SIRIUS HUNTER freediving computer delivers reliability and precision you can count on.

Developed and tested by spearfishers, it reflects the Mares commitment to “Innovation with Purpose” - technology that connects you closer to the ocean.

“Built by spearfishers, for spearfishers.” – Paolo Acanti, Mares Product Manager and passionate spearfisher.