Apeks Quantum Dive Computer AP0188 This wrist type computer has clear visible display and is supplied complete with robust strap. A specially designed screen guard, made by Apeks, is now available from Authorised Apeks Dealers. This is very competitively priced and ideal for protecting your computer. Screen visibility 50mm x 37mm Reliable mechanism; weight 115g Battery life approximately 3 years Nitrox compatible - mix one may be set for Air (21%) to 50%, mix two may be set for Air (21%) to 99%. Features: Altitude correction Panel illumination Low battery indicator Current depth Maximum depth Dive time Non-deco limit Total ascent time Current water temperature Ascent rate indicator Personal safety factor Residual nitrogen indicator Repetative dive Out of ceiling depth warning Out of range warning Ascent rate warning Dive time alarm Max depth alarm Sea/fresh water change Current PO2 PO2 limit warning OLI warning Oxygen limited indicator Surface interval time Desaturation time Do not fly indicator Gauge mode Dive planning mode Dive log memories 60 hours active dive time Profile memories Safety stop PC Interface is avialable (not included)