Easy to See, Simple to Use, Brilliant LCD Display: The Cobalt 2 is the newest release of Atomic Aquatics new generation of dive computers that are easy to use, easy to read and totally intuitive. The Cobalt 2 features a newer more powerful microprocessor, faster compass response and new user options such as auto screen brightness. User selectable gas switches are increased from 3 to six mixes. The menu driven display is self-explanatory at every level and can be mastered in just a few minutes. This simplicity is in contrast to its powerful capabilities and the many advanced user functions available to those who wish to use them. In addition, it uses a rechargeable lithium ion battery that will give the diver between 40 and 60 hours of dive time per charge and a charging adapter that gives the user the option of USB or AC sources. Brilliant full color Organic Light-Emitting Diode (OLED) display provides the high contrast, sharpness and brightness that can be viewed at almost any angle. The Upgrade for Smoother More-Responsive On-Board 3D Digital Compass makes Underwater Navigation Simple. Set-a-Course and Go, unlike most Digital Compasses, it will Remain Active until you choose to turn it off. The Cobalt includes a High Pressure Quick Disconnect that allows the Cobalt to be Removed-and-Carried-Separately from your Regulator System. The Cobalt is a Multi Gas Computer that can be set for any Air/NITROX Mix to 99% O2.