The shock resistant cases of these models are great for active training. The 49mm synthetic case is paired with a synthetic strap that secures with a buckle clasp. While linked with the g-shock connected phone app, you can configure settings for a step count log with five exercise intensity levels, calorie calculations, and step targets on this model. The ability to use the app to create timer combinations and send them to the watch, to store stopwatch measurement data, to view data and more all combine to help you plan and record your workouts, making them more effective and enjoyable. This model incorporates bluetooth®, phone app linking, and much more to make the gba900 the perfect choice for everyday wear and fitness training.