Mares SIRIUS HUNTER – Freediving Computer

The Mares SIRIUS HUNTER is a durable freediving computer designed specifically for underwater hunting, spearfishing, and apnea training. It combines a robust design, a clear display, simple two-button operation, and advanced features for freediving.

Whether you’re training in the pool, freediving, or heading out for deeper spearfishing dives, the SIRIUS HUNTER provides you with important information about every dive and allows for detailed performance analysis via the Mares/SSI app.

A durable computer designed for spearfishing

The SIRIUS HUNTER was developed with an emphasis on reliability and ease of use even in demanding conditions. Its reinforced construction and large buttons allow for comfortable use even while wearing gloves.

The large 1.3" (33 mm) display with Gorilla Glass provides excellent readability while offering high resistance to scratches and mechanical damage.

Key Features

• Durable construction suitable for spearfishing and freediving
• Large 1.3" (33 mm) display with Gorilla Glass
• Simple two-button operation
• Maximum display depth of up to 100 m
• Depth resolution of 0.1 m from 0 to 99.9 m
• Sequential depth alarms for advanced freediving training
• Stopwatch and chronograph functions
• Countdown timer and lap counter for pool training
• Silent mode for undisturbed concentration
• Audible alarms with on/off option
• Detailed freediving logbook
• Memory for up to 200 hours of dive profiles at a sampling rate of 0.5 seconds
• Bluetooth connection to a smartphone
• Dive synchronization and graph display in the Mares/SSI app
• Upgradable software
• User-replaceable CR2450 battery
• Battery life of approximately 200–300 hours of diving
• Replaceable strap with bungee cord option
• Watch functions for everyday use
• Metric or imperial unit settings
• Freshwater or saltwater settings
• Altitude settings

Freediving features for effective training

The SIRIUS HUNTER offers features designed for systematic freediving training. Practical depth-based sequential alarms allow you to set alerts at various depths and can assist in practicing advanced equalization techniques.

For pool training, a stopwatch, countdown timer, lap counter, and silent mode are available. After a dive, you can analyze the recorded data and track your performance progress.

Detailed Logbook and Bluetooth

The computer records up to 200 hours of dive profiles at a sampling rate of 0.5 seconds. Using Bluetooth, data can be transferred to a smartphone and viewed in the Mares/SSI app, including a detailed dive history and graphical analysis.

Bluetooth also allows for firmware updates for the computer.

Long-Lasting Battery

The Mares SIRIUS HUNTER uses a user-replaceable CR2450 battery. The battery life is approximately 200–300 hours of diving, so there’s no need to worry about frequent recharging.

SIRIUS HUNTER as an everyday watch

In addition to its freediving functions, the SIRIUS HUNTER can also be used as a regular watch. It displays the time and date, features an alarm, and offers other basic functions for everyday use.

Technical Specifications

• Battery type: CR2450
• Battery life: Approximately 200–300 hours of diving
• Maximum display depth: 100 m / 328 ft
• Ascent rate indicator: No
• Gas switching: No
• Stopwatch: Yes
• Clock: Yes
• Dual time: No
• Alarm: Yes
• Dive planner: No
• Metric/Imperial unit selection: Yes
• Freshwater and saltwater settings: Yes
• Option to clear saturation: No
• Audible alarms on/off: Yes
• Prevention of uncontrolled ascent: No
• Altitude setting: Yes
• Resolution: 0.1 m to 99.9 m; 1 m at greater depths. Resolution in feet is always 1 ft
• Operating temperature: -10 °C to +50 °C / 14 °F to 122 °F
• Logbook memory: 200 hours of dive profiles at a sampling rate of 0.5 seconds
• Display material: Gorilla Glass
• Clock: Quartz clock, time and date
• Software upgradeable: Yes
• Gas integration: No
• Graphical and Numerical Pressure Display: No
• USB Charging: No
• Bluetooth: Yes

Why choose the Mares SIRIUS HUNTER?

The SIRIUS HUNTER is a dive computer designed with the needs of spearfishers and freedivers in mind. It offers a combination of durability, ease of use, and specialized features for both training and actual dives.

It’s ideal for anyone who wants to keep track of depth, time, and dive progression while freediving and spearfishing, and who also wants to analyze their data afterward.

Mares SIRIUS HUNTER – made by spearfishers for spearfishers.