Check the listing for details. Used Fitbit Charge 2. Condition: Used. Listed at 19.99 USD. The band and tracker are in excellent physical shape showing very few signs of prior use, but unfortunately they refuse to update. They have been tested for battery life and functionality. I offer a full refund and free return for 30 days should an unfixable problem with the tracker arise. This Fitbit Charge 2 activity tracker is the perfect tool for monitoring your fitness progress. With features such as a heart rate monitor, stopwatch, calorie monitor, and distance traveled tracker, it can help you get the most out of your workouts. The device is compatible with smartphones and is water-resistant, making it perfect for runners and joggers alike. The rechargeable battery ensures long-lasting performance, and the alarm feature helps you stay on schedule. The Fitbit Charge 2 activity tracker is made from durable stainless steel and features sensors such as an accelerometer and a gyroscope. It is designed for unisex adults and comes with measurements in heart rate, time, calories, and distance. The device is available in English, Italian, French, German, and Spanish languages. This used Fitbit Charge 2 is perfect for anyone looking to get into better shape or maintain an active lifestyle.