Designed with ease-of-use and simplicity in mind, the Depth Gauge display is designed with such features as a luminescent gauge face for easy reading in low light. The Aqualung Depth Gauge, with its specially designed depth scale and luminescent gauge face, allows for easier reading at a glance. High fidelity depth scale provides accurate and easier reading at shallow depths. Strap is designed to fit a variety of wrist sizes and wet/dry suit diameters. Maximum depth indicator. 60-meter maximum depth. Wrist mount boot allows for future upgrade to the i300 dive computer module.