Track your activity levels, sleep patterns, and more with the black Fitbit Alta Activity Tracker in size small. This sleek band uses an array of sensors to keep track of how many steps you take, how far you walk, how many floors you climb, the number of calories you burn, and the time you spend active. It connects to your smartphone via Bluetooth and syncs its data wirelessly while providing you with notifications, workout assistance, and more on its OLED tap display. The Alta is sweatproof, rainproof, and splashproof, and it uses a flexible elastomer band that fits individuals with wrists measuring 5.5 to 6.7" around. Additional bands in various colors, sizes, and materials are available for separate purchase. Its lithium-ion polymer battery lasts up to five days on a single charge, which takes approximately one to two hours. Used with box. Please observe photos for condition. Not tested. Light corrosion and band is cracking. Cannot confirm if working because no cord. Box includes band, smartwatch, and Safety Instructions & Limited Warranty Book, and Dongle Receiver Connector. FB150 FB406 Please note: I photograph all items in indoor warm light, and your phone's brightness and display may impact color. See closeups for true color. Open to Offers. I will either counter or accept. Comment with questions or to ask for additional photos of products. Bundle And Save, Look at My Storefront for Discounts.