Ripcurl Mid Trestles Watch, ABS plastic case, Screw down case back, Hardened mineral crystal face, Polyurethane strap, Automatic Tide System (ATS): Rip Curls patented averaging tide system. Easily set to thousands of beaches worlwide., Pre-Programed Moon Phase, Preprogrammed Tide Function: Electronically stored tide charts for 200 preset locations world wide., Dual time, Countdown timer, Stopwatch, heat timer, alarms, Date, EL light, Waterproof tested to 100m, A slightly smaller version of the Trestles watch with all the same quality features. Ideal for water lovers so you never need to take it off!,