The Geo Air features a large, legible display, our patented Dual Algorithm™, five optional colour straps, plus Bluetooth connectivity to all smartphones through the DiverLog+ App. Beginner to experienced, shallow to deep, divers of all types can use the Geo Air to progress their skills, review data—and dive anywhere, in style. Modes of Operation: WATCH, AIR & NITROX, GAUGE, FREEDIVE Version: WRISTWATCH Bluetooth 4.0: YES Maximum algorithm depth: 100 M Altitude adjustment: 610 – 4200 M Decompression capability: VARIABLE, 3,3 – 9 M/MIN AND 6,4 -18 M/MIN Activation: WATER ACTIVATION AND PUSH BUTTON Decompression display: YES, DIGITAL Backlight: LCD DISPLAY Alarms: YES, VISUAL AND ACOUSTIC Battery replacement: USER-REPLACEABLE BATTERIES Battery life: 300 H Log entries: 24 Dives / 99 Free Dives Interface Bluetooth connection to Diverlog+ Nitrox YES, 21-100 % Changeable gases: YES, 2 NITROX MIXES Algorithm DUAL ALGORITHM (PZ+ AND DSAT) Tissue compartments 12 Console NO Warranty 2 YEARS