NAVIFORCE Men's Military Style Unique Calendar Display High-End Quartz Wrist Watch (Black + White Index) Imported Made-in-Japan SEIKO brand quartz movement, Model: AL33. Alloy case + stainless steel back + genuine leather strap. Display time, date and week. 3 ATM water resistant. MAXELL SR626SW 2-year operation life button battery. Case plated with IP in matt black. 4.6 cm in case diameter. Only suitable for men. Exquisite workmanship and high quality production.