SEAC Action HR, High Resistance Dive Computer with Scuba and Freediving Mode, Dive Logbook, Dive Planner, Safety Alarms

Seac Action HR is the wrist computer for scuba diving and freediving activities; easy to use with 3 main modes: scuba mode: complete management of the recreational diving profile with Bühlmann ZHL-16C decompression algorithm for 1 or 2 mixtures (air, nitrox and mixtures with o2 concentration up to 99%); Gauge mode: depth gauge and stopwatch for the management in autonomdive profiles; freediving mode: dive/surface time, deep Ultra-robust and treated construction for increased resistance to shock, corrosion and temperature changes; LCD screen with contrast and adjustable backlight; Long life cr2450 battery; with stainless steel crown, buttons and buckle Logbook memory: scuba mode: 40 hours with record every 5"; Freediving mode: 18 hours of activity with record every 2"; Safety alert: alarm overrun mod, decompression stop violation alarm, rise speed alarm, nofly and desaturation times, maximum altitude alert allowed; dive planner "ndl only"; dive manager software for Mac C (requires min windows 10) 10) available Seacsub.com; data download with USB cable