GOHUOS Men's Military Style Unique Calendar Display High-End Quartz Wrist Watch (Brown) Imported Made-in-Japan quartz movement. Alloy case + stainless steel back + PU 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.