The Fitbit Alta Fitness Tracker will keep track of your steps, distance, calories burned and your active minutes. You can see your stats and time with the bright OLED tap display. The battery life and charge cycles vary with use, settings, and other factors. It will automatically track how long and how well you sleep and you can set a silent, vibrating alarm as well. The Fitbit Alta wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. The Alta tracker and clasp are made with surgical grade stainless steel and will sync wirelessly to android and windows devices. Get calls, texts, and calendar notifications at a glance when the phone is nearby. You can personalize your Alta tracker with interchangeable metal, leather, and classic bands which are sold separately.