Product Description Innovative and user-friendly, the Archimedes utilizes Cressi-subs User Friendly Display System (UFDS). Its breakthrough design features extra large, easy to read characters, convenient diver changeable three volt CR2032 battery with an approximate battery life of two years at 50 dives per year, large Mode buttons and diver programmable functions. The Archimedes 2 Computer is a multi-functional computer that can be used for air or nitrox diving. It uses the Buhlmann ZH-LB algorithm, redesigned by Randy Bohrer. It uses a 12 tissue model with tissue half-times from 5 to 640 minutes. The Archimedes is calibrated for salt water, has a measuring range of 0' to 328'(0 to 99.9 meters) in computer mode and 0' to 656' (0 to 199.9 meters) in gauge mode, and has a maximum surface time calculation of 48 hours. If altitude diving is a concern, the computer will properly adjust from 0' to 19,685'(0 to 6,000 meters). The computer can also be used in either imperial units (feet) or metric units (meters). Computer allows for air or nitrox programming with choices of two different mixtures during the same dive with oxygen fractions from 21% to 50% with increments of 1% for the first mix and 21% to 99% for the second mix. You can make partial oxygen pressure adjustment from 14.5 psi to 23 psi (1.0 to 1.6 bar) , with increments of 1.5 psi (0.1 bar) for each of the mixes. Depending on your diving skill level, physical health and age, you can program in a safety factor for either
