Improve your daily sports routine & activities by measuring the results with the Fitbit Ionic Smart Fitness watch featuring accurate, wrist-based Pure Pulse® heart rate measurement. It also serves as a reliable audio player with capacity up to 300 songs, & GPS navigation that allows for saving your previous routes, & checking distance & pace on the go. With Multi-sport mode & innovative Smart Track feature, the device auto-detects your current activity without the need to switch it manually. Apart from the HR measurement, the tracker pays attention to distance, calories burned, active minutes, floors climbed, hourly activity & stationary time. Moreover, it lasts up to 4 days without charging with navigation turn on, & it's designed for stylish appearance & extreme durability, including water resistance up to 50m.