Seiko SPB231J1 Presage Sharp Edged Series Automatic Watch ✅Caliber Number :6R35 ✅Movement Type:Automatic with manual winding ✅Precision: +25 to -15 seconds per day ✅Power reserve : Approx. 70 hour ✅Jewels:24 ✅Stop second hand function ✅Date display ✅Case Material:Stainless steel (super hard coating) ✅CaseThickness:11.1mm ✅Case Diameter:39.3mm ✅Case Lug-to-lug:47.2mm ✅Crystal: Sapphire crystal ✅Crystal Coating: Anti-reflective coating on inner surface ✅Lumibrite on hands and index(es) ✅Band Material: Horse Skin ✅Clasp: Three-fold clasp with push button release ✅Distance between lugs:20mm ✅Water Resistance: 10 bar/100m ✅See-through & Screw case back ✅1 year warranty