SURGICAL GRADE STAINLESS STEEL - The watch casing is constructed with 316L surgical grade stainless steel with a 31mm diameter that can be worn well in both casual and formal settings. SCRATCH & WATER RESISTANT - All watches come protected with a mineral glass that is scratch & scrape resistant. JAPANESE SEIKO TIME MODULE QUARTZ MOVEMENT - This watch features a very precise Japanese SEIKO TIME MODULE Quartz movement. RELIABLE and COMFORTABLE LEATHER BAND 15mm - Our premium leather band’s are cut from genuine calf leather and built to withstand over time. They are 15mm wide and are Interchangeable with a band remover tool.