The Fitbit Zip Bluetooth activity tracker records steps, distance and calories burned so you have a simple and ultra-portable way to track your progress. The Zip fits easily into your pocket, or can simply clip to your belt or top. Wirelessly upload your stats to your computer, smartphone or tablet after your workouts with Bluetooth® technology. Log food information, weight and more on Fitbit's website or downloadable app, plus share stats and progress with your friends and motivate each other to reach your goals. Features Tracks steps, distance and calories burned Fits in your pocket or clips to your belt or top Uploads stats to your computer, smartphone or tablet wirelessly via Bluetooth® Sweat-proof, rain-proof and splash-proof Supports PC, Mac, iPhone 4s/5/5s, iPod touch (5th generation), iPad Air, iPad mini, Samsung Galaxy S4, Samsung Galaxy S III, Samsung Galaxy Note II or Samsung Galaxy Note 10.1 devices Fitbit Service Policy: 30 day refund or exchange on unopened product. After 30 days, warranty and service of your product will be handled solely by Fitbit.