Key finder with 4 receivers, sound signal and LED light. Easy localization: Just press a button on the transmitter and follow the strong sound signals (80 dB). Comes with 4 receivers, key rings, and double-sided tape that can be easily attached to keys, TV remote controls, wallets, mobiles, pets, luggage, or other easily lost items. Sound + LED light: No app or phone required. Each receiver emits a loud beeping sound and has a built-in LED light to help you find things in the dark. Long battery life: 4 × CR2032 batteries for the receivers are included in the package. The transmitter requires 2 × AAA batteries (not included). Range up to 40 meters: Radio signals can penetrate walls, cushions, and doors, allowing you to find your items up to 40 meters away. (Note that obstacles may reduce the sound level.) Perfect gift: Equipped with large buttons and easy operation – ideal for elderly parents or friends who often forget things. A practical aid to always keep track of your valuables.