1Automatic alarm when outside the valid range.2Control the phone's camera function.3Bluetooth 4.0, ultra-thin design, easy to carry.4Clock plus vibration reminder alarm, a variety of ringtones adjustable.5Replaceable button cell battery.Features:1. Automatic alarm when outside the valid range.2. Control the phone's camera function.3. Bluetooth 4.0, ultra-thin design, easy to carry.4. Clock plus vibration reminder alarm, a variety of ringtones adjustable.5. Replaceable button cell battery.6. Low-power Bluetooth technology, battery life up to one year.7. Positioning function, convenient to see the object's last position on the phone.Specifications:Type: BluetoothBattery: CR2032Bluetooth version: Bluetooth 4.0 low energy consumptionCompatible mobile phone: For Iphone4s/5, for 5s, for 5c,for mini.ITouch5, for ipad3/4.Scope: mobile phones, wallets, cars, children, pets and other accessoriesAnti-lost device: Approx. 3.8*3.8*0.5cm/1.5*1.5*0.2inPacking box: Approx. 10.9*9*1.5cm/4.29*3.54*0.59inColor: BluePackage list:1 * Anti-lost device1 * User manual1 *Anti-lost device1 * User manualIf you find any product problems after receiving the goods, such as damage and incorrect quantity of goods, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.