Details Caliber No. B620 Movement Eco-Drive Strap Stainless Steel Water Resistant Water Resistant to 100m Thickness 12.3mm Case Size 44.8mm 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 Overcharge Prevention Function Gender Gent