SPEEDTIMER Solar Chronograph Limited EditionMovement 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:13.3mm, Diameter:39.0mm, Lug-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, 195.0 Distance between lugs: 20 Other Details Water Resistance: 10 bar Magnetic Resistance: 4,800 A/m Weight: 161.0g Features: LIMITED EDITION on the case back, Serial number engraved on the case back, Tachymeter function, Screw case back, In an actual product, the case back direction might be different from the photograph.