This video shows the features of the Cressi Leonardo Computer . TheLeonardo is the first ever computer released by the Cressi electronics division. It is an entry level computer featuring Air, Nitrox, and Gauge modes. It has three levels of conservation that the user can adjust. It is equipped with speed ascent control - 10m per minute. Modified Haldane and Wienke dive tables are used to calculate saturation. The Log book can hold up to 60 dives or 75 hours worth of dive information and it is updated every 20 seconds. It is a compact unit with a large, Hi-Definition screen.