Stay on top of your fitness goals with the Fitbit Zip Wireless Activity Tracker in black. This activity tracker is perfect for indoor and outdoor workouts, and provides data on heart rate, speed, time, distance, calories, and more. It comes with a variety of features including multi-sport options, wireless capabilities, and compatibility with Windows, iOS, macOS, Android, and other operating systems, making it a versatile and convenient tool for tracking your fitness progress. The Fitbit Zip is made of durable plastic and comes with a wristband, belt, lace clip, and hip clip options for comfortable and secure wear. With no charging required, it's easy to use and can store data for later review.