Design The case shape is faithful to the original but its 39mm diameter, the combination of hairline and smooth polishing on the bracelet and the curved sapphire glass bring it right up to date. Specifications Movement Caliber Number V192 Movement Type Solar Precision ±15 seconds per month Power reserve Operating for approx. 6 months (when fully charged) Functions Overcharge prevention function 24-hour hand Equipped with small seconds hand Chronograph up to 60 minutes in 1/5 second increments Power reserve indicator Date display Case/Band Case Material Stainless steel Case Size Thickness:13.3mmDiameter:39.0mmLug-to-lug:45.5mm Crystal Curved sapphire crystal Crystal Coating Anti-reflective coating on inner surface LumiBrite LumiBrite on hands and index(es) Clasp Three-fold clasp with push button release Bracelet Length 205.0 Distance between lugs 20 Other Details Water Resistance 10 bar Magnetic Resistance 4,800 A/m Weight 165.0g Features Tachymeter function Screw case back