Grey Casio G-Shock DW-B5600G-1ER Watch The case and strap of the grey Casio G-Shock watch are made of durable polyurethane. The case of the watch is 42.8 mm wide and has a black dial with red details. The watch has energy-saving Bluetooth technology, which allows the watch to connect to the phone wirelessly. This way you can access many of the watch's useful features. The watch is waterproof and shockproof. The watch has an LED light, world time, timekeeping, a function for phone search and other useful features: LED backlight Timer Timing (1/100 s accuracy) 5 alarms 12/24 hour display Automatic calendar World time Button sounds on/off Bluetooth Phone tracing Multi-language Special impact resistant Waterproof: 200m Case width 43 mm Material: polyurethane Color: black Mineral glass Casio is a Japanese manufacturer of electronic devices, which is especially known for its high-quality and durable sports watches. Casio watches have versatile features and are suitable for both extreme sports and active everyday life. Casio watches are also popular among conscripts due to their durability and excellent value for money. See all Casio products here