Details Caliber No.:U700 Maximum run time from full charge: Approximately 8 months (Normal Use Condition) Movement :Eco-Drive Signal Reception: Without Radio Reception Function Strap: Calf Leather Strap Water Resistant: Water Resistant to 20 bar Weight: 107g Thickness: 13.5mm Case Size: 46mm Case: Stainless Steel Glass: Sapphire Glass Specification: 1/1000 Sec. Chronograph 24hrs Display Alarm Analogue/Digital Time Display Calendar Eco-Drive (recharged by any light source, no need to change battery) Insufficient Charge Warning Function LED Lights Overcharge Prevention Function Power Saving Function Speed Display Timer UTC (Universal Time Coordinated) World Time