Features: Caliber Number :V192 Movement Type :Solar Accuracy :±15 seconds per month Case Material :Stainless steel Crystal :Sapphire LumiBrite :Lumibrite on hands and indexs Clasp :Three-fold clasp with secure lock , push button release with extender Other Details : Water Resistance 200m / 660ft diver's Case Size Thickness: 13.7 ㎜ Diameter: 44.5 ㎜ Length: 51.6 ㎜ Other Specifications Screw case back Screw-down crown Three-fold clasp with secure lock Unidirectional rotating bezel Other Features: 24-hour hand Chronograph up to 60 minutes in 1/5 second increments Date display Display function of resumimg electric power generation. Equipped with small seconds hand Overcharge prevention function