Caliber No. U680 Movement Eco-Drive Strap Calf Leather Strap Water Resistant Water Resistant to 200m Thickness 13.9mm Case Size 47mm Case Stainless Steel Glass Sapphire Glass Specification 24hrs, Date, Day & Month Display 43 World Cities Time Alarm Analogue/Digital Time Display Chronograph Dual Time Eco-Drive (recharged by any light source, no need to change battery) Global Radio-Controlled Insufficient Charge Warning Function LED Lights Luminous Hands and Index Overcharge Prevention Function Perpetual Calendar Power Reserve Indicator Power Saving Function Summer Time ON / OFF Timer UTC (Universal Time Coordinated)