Suunto RGBM, Depth 100m, Logbook, PC Interface, Time. Features Air, Nitrox, and Free-diving modes with Suunto RGBM for a safer dive. Logbook records and stores dive data, and optional PC Interface downloads information to graphs. Maximum depth display to 100m. Dual-time, day/date, alarm, and user-replaceable battery. PC Software not included. Material: Plastic Composite / Elastomer (Also Model: Suunto SS005993600)