The G-Shock GBX-100KI-1ER offers all the features you could wish for in a watch. 
Energy-saving Bluetooth technology allows you to connect the GBX to your smartphone. This way you can also be sure that the time is always right.
It offers you a training analysis that shows your training status, fitness level and training load as well as recovery times. This information provides a good basis for planning further training sessions.
Of course, it is shock resistant and comes with a special bezel alloy to protect it from scratches.
A high and low tide indicator for surf sessions and water resistance up to 20 bar also make it a perfect buddy for all your water sports activities.

One for all. 

FeaturesBluetooth® SmartExact time via smartphoneSuper Auto LED lightShockproofMoon phase displayHigh and low tide indicatorStep trackerAccelerometerYou can use the Training Planner to set individual training goalsTraining Analysis: analyse your training status, fitness level and training load as well as regeneration timesTraining Log for saving training sessions World time function for up to 29 time zonesStop function – 100 hours5 timer – 1/1 sec. – 60 min. (with automatic repeat function)4 daily alarmsSnooze functionVibrating alarmAutomatic calendar with date, month and weekday12-/24-hour formatMineral glassResin caseResin wristband for extreme durability and flexibility2 years – 1 batteryWaterproof up to 20 bar tested according to ISO 22810Dimensions (H x W x D) 50.9 mm x 46 mm x 14.7 mmWeight: approx. 66 g