This Casio G Shock GBD-100 is a great addition for any watch collector. Distance measurements via the accelerometer are corrected by linking with smartphone GPS functions via Bluetooth® connection. In addition to tracking running pace by comparing the distance measured with running time, it is also equipped with an auto lap function. It supports daily training via the combination of a conventional step tracker, an interval timer, a lap timer, and a calorie consumption calculator. It also has dedicated Life Log and Activity History apps, and allows for automatic creation of training plans. Uses a high-definition MIP LED for the display, and is also equipped with a super illuminator. A soft urethane material is used for the band for a more comfortable fit, and a large number of band holes are provided for fine adjustment. It also has a battery life of about two years even when using multiple functions every day. Useful for a wide range of purposes, from daily health management to improving running endurance. Nothing wrong with it. Comes with the watch tin making it great for gift giving.