Welcome to our store! 1. [Easy to Find Items] You can place the Bluetooth item finder on your frequently lost items, such as keys, handbag, backpack, children, pets, to prevent loss and save time finding things. One app can add multiple finders to easily manage your items. 2. [Multifunctional] Bluetooth item finder can protect your phone and valuables with rich features, such as checking the last lost location on the map, phone alert when lost, remote self-timer function, left-behind item alert, find your phone, etc. 3. [Two-Way Alarm] When the Bluetooth item finder is disconnected from your mobile phone, the mobile app will remind you, and the locating device will also alarm, as long as the product is out of reach, your mobile phone and this anti-lost device will sound a beep to remind you. 4. [Positioning Function] The smart key finder has a positioning function, which is convenient for you to check the last position of the item on your mobile phone to help you find it. You can open the map in the app and determine the approximate location of the lost item. 5. [Energy Saving] This key finder has a built-in replaceable battery, which is energy-saving. With the app settings, you can easily keep your keys, handbag, and other items safe. It can also be placed on children or pets to ensure their safety. 6. [Compatible Devices] The item tracking device has wide compatibility with for iPhone 13 12 11 X 87 series, for Android system, for Android 8.0 or higher, the phone must support 5.0 or higher Bluetooth version to meet your different usage needs. Item Type: BT Item Finder Material: Plastic Supports IOS and Android Systems: For IOS 12.5.5 or higher, for Android version requires 8.0 or higher, the phone must support 5.0 or higher BT version BT: 5.0, Bluetooth Low Power (BLE) support Two-way alarm: Support Frequency Range: 2.402-2.480ghz Operating Power: -94dbm Operating Temperature: 0-50 ℃ Operating Voltage: 2.7-3.2V Quiescent Current: Less than 10uA Battery: 1 x 240mAh CR2032 (included) 1 x BT Item Finder 1 x Instruction Manual Customers are our top priority. If you find any problems with your product after receiving it, such as damage or incorrect quantity, please contact us immediately. We strive to provide you with the best after-sales service.