Calibre No. E031 Maximum run time from full charge (Normal Use Condition) Approximately 6 months Movement Eco-Drive Signal Reception Without Radio Reception Function Strap Stainless Steel Water Resistant to 5 bar Weight 72g Thickness 8.3mm Case Size 29.5mm Case Stainless Steel Surface Processing Rose Gold Plating Glass Sapphire Glass Warranty 3 years warranty Specification Mother of Pearl Dial Diamond: 5 Pcs Eco-Drive (recharged by any light source, no need for regular battery replacement) Insufficient Charge Warning Function Overcharge Prevention Function