The MaxDepth gauge is still one of the most dependable instruments around for divers who are just starting out or don't feel they need the advanced features of a Personal Dive Computer just yet. The non-linear depth scale is easier to read in shallow depths, and makes it much easier to maintain safety stop depths. The OceanGlo luminescent gauge face absorbs light and glows approximately 7 times faster and longer than conventional glow-in-the-dark materials. 60m/200ft maximum depth reading and automatic maximum depth indicator.