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	• Simple and reliable • Easy to use buttons • User-replaceable batteries RGBM Algorithm Deep Stops The M2 RGBM is a complete dive computer for both recreational and technical dives and is powered by two 1.5 volt AAA alkaline batteries, easily available worldwide. During the dive • Current depth / maximum depth achieved (on request) • Duration of the dive • Safety stop • Remaining no-decompression time at the current depth • Decompression stop times • Total ascent time • Water temperature (on request) • Speed of ascent (as a percentage of the maximum permitted speed) • Value for CNS O2 LIMIT % (in the case of Nitrox dives) • Dive time in minutes and seconds (in bottom time mode)
On the Surface • Surface time • Logbook facility for storing 50 dives in memory • Profiles of the last 50 dives, at 20 second intervals (max 38 hours) • Desaturation time display • Time-to-fly display • Calendar and clock function • Air temperature • Scrolling of no-stop times for planning repetitive dives • Dive simulator	Alarms • No-decompression limit reached • Rapid ascent • Omitted decompression stop • Low battery • Max permitted depth for the programmed PPO2 value (for Nitrox dives) Main Special Functions • Setting of Air/Nitrox/Bottom time programs • Setting of percentage O2 from 21% to 50%, in increments of 1% • Setting of PPO2 max from 1.2 to 1.6 • History of the total number of dives, the deepest dive logged, the lowest temperature measured underwater, and the total hours of diving • Display backlight, timed or permanently illuminated (using push-button controls) • No loss of memory during battery change • Function for clearing residual nitrogen memory • Function for disabling audible alarms • Fresh water / seawater setting (default fresh)