Features: Compact, small and lightweight, easy to carry anywhere anytime. With the new Bluetooth 4.0 technology, the power consumption is extremely low. Compatible mobile phones: For Android system requires 8.0 or above, for IOS system requires 11 or above, and supports Bluetooth 4.0. It is connected with the Bluetooth function of the mobile phone and the bidirectional search function can connect multiple anti-lost devices at the same time. In the connected state, when the anti-lost device exceeds the set Bluetooth range, the mobile phone and the anti-lost device automatically alerts at the same time. You can check the position of the map when the device is disconnected.Help users to find your misplaced or lost items quickly and save precious time. Do not disturb function, you can set a period of silence to prevent interference with work and other important time. Through the anti-lost device to control the phone's shooting function to achieve remote self-timer. As well as control the phone recording function. Specification: Item Type: Bluetooth Anti-lost Tracker Color(Optional): white, black, red, blue, green Battery: 1*CR2032 (Not Included) Bluetooth Version: Bluetooth 4.0 Low Energy Support systems: for IOS11 above; for Android 8.0 above; Models need to support bluetooth 4.0 standard Working Distance: Within 10 meters ( Barrier-free up to 20 meters in open space) Scope: Cellphones, Wallets, Cars, Ch ildren, Pets And Other Ancillary Objects Side length:3.8cm/1.5in Weight: Approx.8g/0.3oz Package list: 1 x Mini Bluetooth Tracker (battery Not Included) .