Excellent condition. Only worn about 6 months. Great battery life. Tracking data distance, time, calories burned, activity, sleep activity, heart rate, and steps taken. Track heart rate continuously on your wrist to maximize workouts, better track calorie burns, and get a clearer picture of your health all without an uncomfortable chest strap. Track steps, distance, calories burned, floors climbed, active minutes, and hourly activity with long-lasting battery life. To help you stay active throughout the day, Charge 2 sends reminders to move that encourage you to take 250 steps every hour. Charge 2 automatically tracks how long and how well you sleep to help you work toward a better routine. Bluetooth 4.0 run. Time (up to) 5 day(s). Protection splashproof, sweatproof. Product type activity tracker. Connectivity Bluetooth supported. Host device os iOS, android, windows. Phone display monochrome OLED. Dimensions (L x W x H): 0.9 in x 0.5 in.