Calibre No.E784 Maximum run time from full charge (Normal Use Condition)Approximately 8 months MovementEco-Drive Signal ReceptionWithout Radio Reception Function StrapStainless Steel Water ResistantWater Resistant to 5 bar Thickness10mm Case Size 41mm CaseStainless Steel GlassSapphire Glass Warranty3 years warranty Specification Date Display Eco-Drive (recharged by any light source, no need to change battery) Insufficient Charge Warning Function Overcharge Prevention Function Power Saving Function Perpetual Calendar 26 Time Zone World Time Summer Time (ON/OFF)