Garmin Forerunner 45 GPS Watch - Wrist - Heart Rate Monitor, Accelerometer - 1in - 208 x 208 - GPS - 168 Hour - 1.65in - Black - Glass Lens - Silicone Band - Water Resistant - Glass Lens

Features accelerometer for measuring the acceleration of a moving or vibrating body With up to 168 hour run time, get maximum out of the built-in battery Attach it to your wrist like a watch and know the distance traveled and track routes Attaches to your wrist for a comfortable and secure fit Durable water resistant casing ensures secure usage when dealing with water