Details Caliber No. B612 Movement Eco-Drive Strap Urethane Strap Water Resistant Water Resistant to 200m Thickness 13.8mm Case Size 44.5mm Case Stainless Steel Glass Mineral Glass Specification 24hrs and Date Display Chronograph Eco-Drive (recharged by any light source, no need to change battery) Insufficient Charge Warning Function Luminous Hands and Index Overcharge Prevention Function