This Casio G-shock Digital Watch is the perfect timepiece to wear or to gift. It's Green 48 mm Round case combined with the comfortable Green Plastic watch band will ensure you enjoy this stunning timepiece without any compromise. Operated by a high quality Quartz movement and water resistant to 20 bars, your watch will keep ticking. This sporty and fashionable watch gives you a unique feeling in every outfit! The watch has a calendar function: Day-Date-Month, Bluetooth, Stop Watch, Countdown, Dual Time, Alarm. High quality 21 cm length and 19 mm width Green Plastic strap with a Buckle. Case diameter: 48 mm, case thickness: 14 mm, case colour: Green and dial colour: Black. The GBD-800 range allows you to link your watch with the G-SHOCK Bluetooth® Connected phone app to provide access to a number of functions that enhance workouts. Daily health and fitness support functions include a 3-axis accelerometer that keeps track of step counts, Auto LED light, Dual Time, Lap memory 200, Stopwatch, and 200M Water resistance also provides essential support to the shock resistant timepiece. These are the latest additions to the new G-SQUAD sports lineup from G-SHOCK. The good-looking designs and utility colours of these models maximise coordination possibilities with both everyday fashions and training wear. Function-wise, these watches link with the CASIO WATCHES phone app to provide access to a number of functions that enhance workouts. Daily health and fitness support functions include a 3-axis accelerometer that keeps track of step counts, a Multi-Timer that lets you create up to 20 timer combinations of five timers each, memory for up to 200 lap records and more. The app also makes it possible to maintain step count logs with five exercise intensity levels, to calculate the calories you burn, to specify a daily step target, to create timer combinations and send them to the watch, to store stopwatch measurement data, to view data, and more. All of this combines to help you plan and record your workouts, making them more effective and enjoyable. Other features include app-based auto time setting correction and other features for more efficient timekeeping, and an Auto LED Light to facilitate workouts in areas where lighting is dim. Back wings on the inside of the bands where they connect to the case, a new band ring shape that prevents sliding, and more band holes to allow better tightness adjustment, all add up to a more comfortable fit. You can make fine adjustments to the band size.