Item Type: Smart FinderMaterial: ABSBluetooth Version: 4.0Working Distance: Approx. 10m/ 33ftBattery: 1xCR2032 240mAh Battery (Included)Compatibility: For iOS/Android SystemsPackage List1 x Smart Finder1 x Manual1This smart finder uses BT 4.0 technology to compatible for Android/iOS. Show the lost car key, luggage, wallet, dogs, cats distance from you on the APP to let you find them accurately. 2When the Bluetooth antilost locator is disconnected from the phone, thephone app will remind you. The receiver sounds beeps you can hear voices from GPS locator exceed 33ft to remind the owner to prevent loss. 3This item locator is convenient for you to check the last position of the item on your mobile phone to help you find it, so you can open the map in the app and conjecture the approximate location of the lost item. 4Works as a remote shutter for selfportrait , you can remote control the smart phone camera of your with press on the finder button to take a selfie when you need. 5The builtin CR2032 button battery is replaceable, low energy consumption technology allows for standby for more than 6 months, besides, one mobile phone can manage up to 7 antilost devices at the same time.