[A 4 in 1 function] Attach the 4 receivers to your keychain or other items, then only press the color button on the remote control, the beep sounds can help you locate lost items. It's very easy to use. [Powerful Ability with Long Range] Radio frequency can penetrate through walls, floors, cushions, leather, etc to help you find your object until 30 meters away. [Sound and Light] The receiver emits sounds / beeps, leading you to your lost item. The remote is equipped with an LED touch light for better nighttime visibility when locating the buttons [Large buttons] The large buttons make the key finder especially suitable for the elderly. The transmitter is removable from the base and can be carried with you to find your lost items. [Nice decoration] This object locator is a nice display for tea table, TV bench, bedside table, desk computer or library. A great Christmas gift for your families, friends and lovely pets.