Prospex SPEEDTIMERMovement 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: 13.0mm, Diameter: 41.4mm, Lug-to-lug: 45.9mm 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 Distance between lugs: 21 Other Details Water Resistance: 10 bar Magnetic Resistance: 4,800 A/m Weight: 164.0g Features: Tachymeter function, Screw case back