Grab a 2-pack of the latest wireless Bluetooth Key Finder and Tracking Device. Uses Bluetooth 4.0 and is compatible with IOS and Android platforms. These key finder/tracking devices are suitable for Wallets, Kids, Pets, Purses, Keys, Bags or just about any other belonging you can think of. Working Distance is approximately 75 feet. The device operates off a replaceable Lithium Coin Battery.