Swiss Alpine Military Challenger is an analog timepiece built for daily wear, featuring a 42 mm stainless steel case and 10 ATM water resistance for reliable performance. Key attributes: Blue | Black | Stainless steel | 10 ATM water resistance | Ronda 515 H quartz movement | Buckle closure | Date function | Adjustable leather strap | Round case | Mineral glass | Fixed bezel | Blue dial | Dimensions & fit: Case size: 42 mm | Band width: 22 mm | Case thickness: 10 mm | Adjustable strap | Composition & care: Calf leather | Stainless steel | Mineral glass | Wipe with a soft cloth; avoid contact with chemicals and extreme temperatures; have battery and seals serviced by a qualified technician; do not operate crowns/buttons underwater.