Mechanical Chronograph Datsun 240Z Limited EditionMovement Caliber Number: 8R48 Movement Type: Automatic with manual winding Precision: +25 to -15 seconds per day Power reserve: Approx. 45 hours Jewels: 34 Functions: Chronograph with 30 minutes & 12 hours, Stop second hand function, Date display Case/Band Case Material: Stainless steel (hard coating) Case Size: Thickness:14.6mm, Diameter:42.0mm, Lug-to-lug:49.5mm Crystal: Dual-curved sapphire crystal Crystal Coating: Anti-reflective coating on inner surface LumiBrite: LumiBrite on hands and index(es) Band Material: Cow leather Clasp: Three-fold clasp with push button release, Bracelet Length, 192.0 Distance between lugs: 20 Other Details Water Resistance: 10 bar Magnetic Resistance: 4,800 A/m Weight: 127.0g 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.