SEAC ACTION is a wrist-mount diving computers for scuba and freediving. Easy to use, with 3 main modes: • SCUBA MODE: full management of recreational dive profiles with a Bühlmann ZHL-16C decompression algorithm for 1 or 2 mixes (air, Nitrox, and mixes with O2 concentrations up to 99%). • GAUGE MODE: Depth gauge and stopwatch for managing your dive profiles independently. • FREEDIVING MODE: Dive/surface time, current/maximum depth. Main features: • LOGBOOK MEMORY: SCUBA mode: 40 hours with records every 5”. FREEDIVING mode: 18 hours of activity with records every 2”. • Safety warning: MOD exceeded alarm, deco stop violated alarm, ascent speed alarm, NoFly time and desaturation calculations, maximum permitted altitude warning. • “NDL only” Dive Planner. • Dive Manager software for MAC/PC (requires Windows 10), available free of charge at seacsub.com. • Download data via USB cable. • Ultra-durable structure treated for improved resistance to blows, corrosion, and swings in temperature. • LCD screen with contrast and adjustable-intensity backlighting. • Long-lasting CR2450 battery.