SEAC Action HR, Dive Computer with USB Cable for Scuba and Freediving, Logbook, Planner, Safety Alarms

Seac Action USB cable 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 percent); Gauge mode: deep. meter and stopwatch for autonomous management of diving profiles; freediving mode: divesurface 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 cm; freediving mode: 18 hours of activity with record every 2 cm; safety alert: alarm overrun mod, breach alarm stop, alarm speed rise, calculation of nofly and desaturation times, maximum altitude alert allowed; dive planner "ndl only"; dive manager. software for mac c mac (requires min windows 10) available for free on Seacsub.com; download data with USB cable