The Evolution H2O II is a chest mount altimeter that measures 1 inch tall with a 3 inch face. This altimeter weighs only 7.2 oz. and has an indicated range of a minimum of 20,000 feet MSL, and is currently rated to a depth of 40 feet for a 2 hour duration.
This model has a larger face and is intended for pond swoopers or anyone who will encouter water during a jump. The Evolution H2O II also features a counterbalanced (Inversion) movement making this model free fly friendly as well. As with other models the H2O II has all of the faceplate options including night vision.