The Fitbit Inspire 3 Fitness Tracker in Black/Midnight Zen is a brand new, sealed device that offers a variety of fitness tracking features. With a battery life of up to 10 days, this activity tracker provides measurements for heart rate, speed, time, distance, and calories. It is suitable for both indoor and outdoor activities and is compatible with iOS and Android operating systems. The device also includes features such as temperature monitoring, Bluetooth connectivity, a speedometer, smartphone compatibility, goal setting, and a sleep tracker. With sensors for acceleration and GPS, the Fitbit Inspire 3 is designed for activities like gym training, weightlifting, swimming, yoga, and running.