Features [Item Finder Locator] This set includes a transmitter and 6 receivers, allowing you to easily locate your lost items, do not have to worry about not finding your valuable items. [433.92MHz Wireless] This wireless key finder adopts 433.92MHz signal transmission, can easily penetrate wall, cushion, and door, offering a long working distance of up to 40 meters (open area). [Loud Beep Sound] Emitting a sound of 75 to 80dB, the receivers ensure that you can easily hear the prompt, making it perfect for finding car keys, wallets, luggage, or even pets. [Easy to Use] This anti lost device operates simply, eliminating the need for phone APP, simply pressing the corresponding color coded button and following the buzzing sound. [Long Lasting] This wireless item locator is made of sturdy ABS material and powered by long lasting CR2032 batteries, ensuring a long lifespan. Specification:Item Type: Key Finder Material: ABS Battery: CR2032 Button Battery x 9 (Included) Single Battery Capacity: 210mAh Working Distance: 15-30 Meters (Open Range) Sound: 75-80dB Frequency: 433.92MHz Package List:1 x Transmitter 6 x Receiver 1 x Base 9 x Battery 6 x Carrying Ring 1 x Square Double Sided Tape 6 x Small Round Double Sided Tape 1 x Disassembly Tool 1 x User Manual Package List 1 x Transmitter 6 x Receiver 1 x Base 9 x Battery 6 x Carrying Ring 1 x Square Double Sided Tape 6 x Small Round Double Sided Tape 1 x Disassembly Tool 1 x User Manual