Classic Avalon• Case: ABS plastic with stainless steel screws down back and hardened mineral crystal. Youth Size. • Function: Patented Oceantide module ATS- Automatic Tide System. Easily set to thousands of beaches worldwide. Future tide, stopwatch, heat timer, alarm, 2nd time zone and EL light. • Strap: Poly Urethane. • WATERPROOF TESTED: 100m.