Bühlmann ZH-L16C algorithm with adjustable gradient factors Nitrox 21%-50% One gas Clear segment display made with chip-on-glass technology with 800 segments Logbook capacity of 100 dives including charts via Mares and SSI applications User replaceable battery (CR 2450) with a long life of 100 dives Integrated Bluetooth interface for direct connection to a smart device One button for intuitive operation Easily removable strap can be replaced with a bungee attachment Compatible with the Mission console Firmware updates via Mares and SSI applications TECH SPECS: Material: CR2450 Battery duration:100 hours dive time Nitrox use: EAN from 21% to 50% Max Displayed Depth: 150 m / 492 ft Ascent Rate Indicator (m/min - ft/min): true Memory capacity: 100 hr Profile Sampling Rates: 5 s Display: Segment Display Gas switching: false Stopwatch: false Watch: false Dual Time: false Daily Alarm: false Plan Mode: false CHOICE_MET_IMP: false Fresh and Seawater Settings: false RESID_NITRO_RESET: true Option To Exclude Audible Alarms: true Exclusion of "Uncontrolled Ascent": false Altitude Adjustment: false Upgradeable software: true Air Integrated: false Graphic and Numeric Tank Pressure: false USB Charger: false