[A 4-in-1 Function] Attach the 4 receivers to your keychain or other items, then simply press the color button on the remote, and the beeping sound will help you find lost items. It's very easy to use. [Powerful Long-Range Capability] The radio frequency can penetrate walls, floors, cushions, leather, etc., to help you locate your item from up to 30 meters away. [Sound and Light] The receiver emits a sound/beep, guiding you to your lost item. The remote is equipped with an LED touch light for better visibility at night when searching for keys. [Large Buttons] The large buttons make the key finder particularly suitable for the elderly. The transmitter detaches from the base and can be carried with you to find your lost items. [Nice Decoration] This item locator is a nice display for your coffee table, TV stand, nightstand, desktop computer, or library. A great Christmas gift for your families, friends, and beloved pets.