Dive computer i seac action hr scuba the dive computer i seac action hr scuba is a wrist-mounted dive computer designed for scuba diving, freediving, and gauge mode use. Built for divers who want clear dive data, reliable underwater tracking, and easy logbook management, this dive computer combines essential dive planning, safety alarms, dive profile control, and usb data download in one compact wrist unit. This model supports scuba mode, gauge mode, and freediving mode, making it a versatile choice for recreational divers and freedivers. Official seac product information lists the bühlmann zhl-16c decompression algorithm, support for air and nitrox mixes, gauge depth tracking, freediving time depth data, adjustable lcd backlighting, and a long-lasting cr2450 battery. Made for scuba and freediving the seac action hr is built for divers who want one dive computer for multiple underwater activities. Use scuba mode for recreational dive profile management, gauge mode as a depth gauge and stopwatch, or freediving mode to track dive time, surface time, and current or maximum depth. Clear backlit lcd display the lcd screen features contrast control and adjustable-intensity backlighting, helping you read important dive information more clearly in low-light or underwater conditions. Retail dive listings also describe the display as backlit and easy to read day or night. Dive planner, logbook and usb download plan dives, review dive activity, and download dive data using the usb c...