Reference: GBD800UC-3

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Case: green resin
Size: 54.1 x 48.6mm
Movement: manufacture quartz caliber 
Function: date, dual time, chronograph, step tracker, Bluetooth connectivity
Dial: black with LED illuminator
Power Reserve: approximately three years
Water Resistance: 200m 
Strap/Bracelet: green resin
Factory Warranty: one year


This is one of the latest additions to the new Power Trainer sports lineup from G-Shock. The good-looking designs and utility colors of these models maximize coordination possibilities with both everyday fashions and training wear. 

In terms of functionality, these watches link with the G-Shock Connected phone app to provide access to several functions that enhance workouts. Daily health and fitness support functions include a three-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 automatic LED light to facilitate workouts in areas where lighting is dim. Comfort is enhanced by back wings on the inside of the strap where it connects to the case, a new strap ring shape that prevents sliding, and more strap holes to allow better tightness adjustment. In addition, you can also make fine adjustments to the band size.