Used Mares Quad Air Scuba Diving ComputerThe Quad Air scuba dive computer is simple to use and has an excellent autonomy. Thanks to its clear display and giant data viewer, the information is instant and readable at a glance. The user interface is divided into three segments: one for depth, one for time and decompression and one for cylinder pressure. For an even more intuitive reading of the data, Mares has increased the communicative effectiveness of the most important parameters by