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