Fitbit Alta Fitness Tracker with extra charger. Small (5.5 - 6.7 Inch).

Track steps, distance, calories burned and active minutes. See stats and time with a bright OLED tap display; Battery life up to 5 days Battery life and charge cycles vary with use, settings, and other factors; actual results will vary. Automatically track how long and how well you sleep, and set a silent, vibrating alarm. The Fitbit_Alta wristband is made of a flexible, durable material similar to that used in many sports watches. The Alta tracker and clasp are made with surgical-grade stainless steel. Personalize with interchangeable metal, leather and classic bands sold separately. Up to 5 days Battery life and charge cycles; vary with use, settings, and other factors. Battery type: Lithium-polymer. Get call, text and calendar notifications at a glance when phone is nearby. Radio transceiver: Bluetooth 40 Charge time: One to two hours Syncs Wirelessly: Android and Windows device