Swiss Alpine Military Sierra is an analogue quartz watch that pairs a black dial with a gold-toned steel bracelet. It delivers a clear date display and robust 10 bar water resistance for everyday dress and sport use. Key attributes: Yellow | Gold | Black | Yellow gold toned steel | Water resistant to 10 bar | Quartz movement | Sapphire crystal glass | Date display | Chronograph function | Folding clasp | Luminescent hands and markers | Black dial | Round case | Index hour markers | Brushed and polished finish | Dimensions & fit: Case diameter: 43 mm | Case thickness: 11.00 mm | Composition & care: Yellow gold toned steel (case and bracelet) | Sapphire crystal (glass) | Wipe clean with a soft cloth. Have battery replacement and seal checks performed by a professional. Avoid contact with chemicals and prolonged immersion beyond the rated depth.