The Mares QUAD 2 is more than a dive computer; it’s your ultimate underwater companion. Engineered for precision and performance, this cutting-edge device offers unparalleled clarity, safety, and control for every dive. Whether you're exploring vibrant reefs or challenging depths, the QUAD 2 adapts seamlessly to your needs with advanced features and user-friendly functionality.Key Features:• Bühlmann ZH-L16C Algorithm: Enhanced with customizable Gradient Factors for precision and tailored decompression calculations.• Multi-Gas Support: Air, Nitrox, and Trimix compatibility, with up to 5 gas mixes for versatile diving options.• Crystal-Clear Display: Segmented Chip-On-Glass technology ensures optimal readability under all conditions.• Intuitive Four-Button Interface: Quick commands and easy navigation for effortless operation during dives and choosing the right settings before the dive.• Decompression Planner: Includes additional Surface Interval function for advanced dive planning.• Logbook Capacity: Stores up to 100 hours of dive profiles at a 5-second sampling rate for detailed tracking.• Underwater Menu: Adjust settings mid-dive with this convenient feature.• TTS (Time To Surface): Allowing to plan a safe and enjoyable time underwater at any time of the dive.• Altitude Adaptation: Automatically adjusts to ambient pressure every 20 seconds for altitude diving.• Integrated Bluetooth: Seamlessly sync with your smart device to update firmware and share dive logs via the Mares app.• Long-Lasting Battery: User-replaceable CR 2450 battery supports up to 100 dives. Facts Battery type CR2450 Battery duration 100 hours dive time 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) yes Memory capacity 100 hr Profile Sampling Rates 5 s Display Segment Display Gas switching yes Stopwatch yes Watch no Dual Time no Daily Alarm no Plan Mode no CHOICE_MET_IMP no Fresh and Seawater Settings no RESID_NITRO_RESET yes Option To Exclude Audible Alarms yes Exclusion of "Uncontrolled Ascent" no Altitude Adjustment no Upgradeable software yes Air Integrated no Graphic and Numeric Tank Pressure no USB Charger no