This is the XS Scuba QuikVu Wrist Mounted Depth Gauge Features: Depth gauge scale is 0 to 200 ft (0 to 60 m) Includes a maximum depth indicator needle Luminescent gauge face Glass-filled nylon housing with shatterproof lens CE 0598:EN 250 and UKCA 0120:EN250 certified The QuikVu Wrist Depth Gauge has been scaled down, making it smaller than the average wrist gauge. The glove-friendly buckle and strap assembly has depth-compensating corrugated ribs to keep the gauge snug at depth.