Features: 1.SUPPORT MODELS: Key finder locator supports NFC enabled for Android phones and for iOS phones with for iPhone 7 or above. 2.EASY TO OPERATE: Anti lost device can be connected to the cell phone Bluetooth, after the installation of APP can be used, very convenient and fast. 3.BLUETOOTH FUNCTION: Locator will send out a safe Bluetooth signal every 2 seconds, so that the surrounding mobile devices can detect and receive the signal and accurately find the location. 4.RINGING: When the Bluetooth is connected, clicking Find will make the key locator device ring, so you can easily find the lost locator. 5.COMPACT AND CONVENIENT: Bluetooth tracker is small and lightweight, so it doesn't take up too much space and is easy to carry around. specification:Item Type: Key Finder Locator Material: ABS Microcontroller: ARM32 Bit Processor, 2.4G Low Power Bluetooth Alert Method: Buzzer and LED Support Platform: for Android 5 and for iOS 9.0 Above Built in Lithium Polymer Battery: CR2032 (not Included) PackageList: 1 xKeyFinderLocator 1 x Instruction Manual