Attach CUBE to anything and use CUBE Tracker App to find your Item fast.Lost your Phone? Use your CUBE to locate your phone with ring, vibrate, and flash, even if the app is not running.No need to replace CUBE each year. Just replace battery yourself once a year. Extra battery included.Simple CUBE Tracker app will show last known location on a map, uses bluetooth to tell if you are near or far, press find and CUBE will ring. Also has a separation alarm to alert you if you left something behind.Brand new in package. Asking $10. Message me if you have any questions or if you're interested.