The Scubapro Aladin Prime is an easy to use, compact, multi-function instrument designed for decompression and nitrox dives from 21 to 50%. The Aladin Prime can be turned on manually or will turn on automatically when submerged. The Analog Pressure Gauge tracks pressures from 0 to 6000 psi and is color coded red from 500 to 0 psi. Information displayed can be changed by toggling through max depth, temperature, time of day, tissue saturation graph, as well as activating the back light. Forget your alarm clock? Not to worry, it can be used as an alarm clock too. With the Aladin Prime you will be warned when to change the battery and the battery is user replaceable. These are just a few of the features incorporated into this sophisticated, yet user friendly dive computer.