Specifications Calibre Calibre Type: Automatic - Powered By The Movement Of The Wearer Calibre Function: Analogue - 3 Hands Power Reserve/Battery Life: Approx. 41 Hours Power Reserve Battery: N/A Calibre Number: 4R35 Display: Analogue Case Water Resistance: 50 Metres Case Material: Stainless Steel Case Size (Thickness): 11.7mm Case Size (Diameter): 39.5mm Case Color: Silver Band/Bracelet: Bracelet - Stainless Steel Band Color: Silver Glass Material: Box shaped Hardlex crystal Crown: Pull Out Rotating Bezel: N/A Dial Color: Blue Layout Hand Indicators: Hour, Minute, Seconds Calendar Indicators: Date Lumibrite: N/A Dial Markers: Batons Features Hand Winding Capability: Yes See-through case back: Yes