Case Material Super Titanium with Diamond like Carbon coating bezel Gold Duratect Strap Material Super Titanium Case Size 45mm Water Resistant 20bar Glass Material Sapphire Glass with Anti-Reflective Coating Clasp Type Safety Fold Over Clasp with Push Button Movement Eco-Drive Power Reserve 24 months(in power saving mode) Specification Perfex Regular automatic reception function 5 Bands Global Radio controlled watch World time in 26 cities Perpetual calendar Date display Eco-Drive ( recharged by any light source , No need to change battery) Insufficient Charge Warning Function