Grey Casio G-Shock DW-B5600SF-7ER Watch The Casio G-Shock watch is suitable for active and goal-oriented people. It has versatile training features, such as a step counter, calorie counter, wrist heart rate monitor, VO2max and training planner. Other features that are useful for those on the move are the automatic LED backlight, which turns on when the ambient light dims, and Bluetooth Smart technology, which enables wireless connection of the watch to the phone and thus access to many useful features. The watch is also waterproof and shockproof. The grey tone of the Casio G-Shock watch is slightly greenish. The watch case and bracelet are made of sustainable bio-based resin. The case of the watch is 44.5 mm wide and has a black dial with light details. The watch has a solar movement that takes its energy from sunlight and does not require batteries or charging. Casio G-Shock DW-B5600SF-7ER features: Bluetooth Smart Smartphone time Full-Auto LED light Shock resistant Solar movement Calorie counter Heart rate monitor Acceleration sensor Step Counter Training planner Training analysis Training log VO2max VO2max recovery time World time Stopwatch function (1/100 s accuracy, up to 100 hours) Lap memory 100 5 timers (1/1 s, up to 60 min) 4 daily alarms Snooze feature Vibration alert Button tones on/off Phone Finder Automatic calendar 12/24 hour display Mineral glass Bio-based resin case Bio-based resin strap Waterproof: 200m USB charging Case size: 51.1 x 44.5 x 17.4 mm Weight: 59 g 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 price-quality ratio. See all Casio products here