Calibre J810 Analog Quartz Movement - Eco-Drive - 240 days power reserve. Stainless Steel Case - Black - Round Shape - Bottom screwed-in. Stainless Steel Black Bracelet - Double-Push Clasp, Safety Fold-over Clasp - 22mm Lug Width. Water Resistant to 100 Meters 10ATM. Caliber Features: +/- 15 Seconds per Month, 240 days power reserve, Date, Insufficient charge warning feature, Ring Solar. The Watch comes with the Correct Retail Packaging and 2 Years Watches & Crystals Warranty.