Feature 1 8 Receivers: There are 8 receivers in total, which can be hung on keys, TV remotes, mobile phones, wallets, pets, luggage, etc, you can find multiple items at the same time. 2 Loud Volume: You press the corresponding color coded button on the remote control, when an object is nearby, the device will emit a sound at a volume of 7585dB. 3 Large Range: The radio frequency can easily penetrate the wall, cushions and doors, and the distance is long, the search distance is 1530m/49.2114.8ft in diameter. 4 Easy To Use: Anti lost wireless key finder, no APP, just one tap, easy to use, very suitable for finding keys, wallets, glasses, mobile phones and other easy to lost things. 5 Long Battery Life: This finder receiver uses CR2032 button battery for power supply (not included), and one battery can be used for up to 6 months to meet your needs.Item Type: Key FinderMaterial: ABSWorking Frequency: 433.92MHzWorking Distance: Approx. 15-35m / 49.2-114.8ft (Open Area)Volume: 75-85dBTransmitter Battery: 2 x AAA Batteries (Not Included)Receiver Battery: CR2032 (Not Included) Package List1 x Transmitter8 x Receiver1 x Manual8 x Key Rings2 x Double Sided Stickers2 x Sheets of Stickers