Protection: Keep a track of whatever you attach it to from the app on your mobile device - peace of mind at the touch of a button! Compact: Easy to carry and attach to many items including collars, bags, phone, wallets and more! Set options: Choose from 1 to 4 trackers of the same colour. Colour options: Choose from black, white, red, blue or green. Tracker: Grab yourself a Bluetooth GPS tracker. Compatibility: Works with leading iOS platforms. Bluetooth Gps Tracker | Living Social