1. Practical Lost Keys Tracker: ideal for locating lots of items, such as keys, wallets, glasses, pets, dogs, cats, television remote controls, luggage and other things that need urgent. 2. Compact for Carrying: this key locator device measures about 1.18 inch, easy to carry and store, helpful in function. 3. Simple one-tap setup instantly connects with your iPhone or iPads. Play a sound on the built-in speaker to help find your things, or just ask Siri for help. 4. Anti-Loss Alert: in connection state, when the locator device exceeds the set Bluetooth range, the phone and the locator device will alarm at the same time. 5. Ideal Gift: when you're scrambling to find your things, this key finders set is the ideal thing you need.