Cressi’s Giotto is an air-nitrox wrist-mount dive computer with abr new RGBM algorithm. Able to program two gas mixes up to 99br percent nitrox, the Giotto’s screen displays data in easy tobr understand sections. A screen prompt lets you know what modebr you’re in so you can’t get lost. The Giotto is powered by a userbr replaceable battery and comes with an extra -long wrist strap.