Caliber Number V176 Movement Type Solar Precision ±15 seconds per month Power reserve Operating for approx. 6 months (when fully charged) Functions Overcharge prevention function Stop second hand function Date display Case Material Stainless steel Case Size Thickness:12.1mm Diameter:41.4mm Lug-to-lug:49.0mm Crystal Sapphire crystal LumiBrite Lumibrite on hands and index(es) Clasp Three-fold clasp with push button release Distance between lugs 20mm Water Resistance 10 bar Weight 131.0g Features Screw case back