Fitbit Alta Activity Tracker: Maintain a healthy, active lifestyle with help from this wireless activity tracker, which tracks your steps, distance, calories burned, active minutes and sleep patterns for 24/7 monitoring. A wireless sync dongle is included for easy connectivity to your Windows, Apple or Android device.
Keep track of daily activity levels Measures steps taken, distance traveled and calories burned.
Easy viewing in low-light conditions Backlit OLED display. Adjustable strap Fits comfortably on most wrists from 5.5" to 6.7" in circumference.
Syncs to select Apple, Android and Windows devices Such as iPhone, iPad, iPod touch and cell phones and tablets with Android or Windows for simple wireless communication.
Waterproof design So you don't have to worry if you wear it in the shower or get caught in the rain.