Features: 1.With the new Bluetooth 4.0 technology, the power consumption is extremely low. The button battery CR2032 power supply, standby for more than 2-3 months, and convenient to replace 2.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 3.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. 4.You can check the position of the map when the device is disconnected 5.Do not disturb function, you can set a period of silence to prevent interference with work and other important time specification:Description: The anti-lost Bluetooth button is a product based on the latest Bluetooth 4.0 low power consumption, It can connect with the user's easy to lost items (such as: key, handbags and other items) through a dedicated APP on the mobile end software settings, to realize the goods loss prevention; even you can also hang this button to your young children, ensure that children in your slight range; Or hang on your pets, will not have to worry about their lost. 1. With the new Bluetooth 4.0 technology, the power consumption is extremely low. The button battery CR2032 power supply, standby for more than 2-3 months, and convenient to replace. 2. 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. 3. 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. 4. You can check the position of the map when the device is disconnected. 5. Do not disturb function, you can set a period of silence to prevent interference with work and other important time. 6. 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. 7. Support IOS7.0 or above and Android 4.4 above, the model must support Bluetooth 4.0. s: Item Type: Bluetooth Anti-lost Tracker Optional Colors: White, Black, Pink, Green Battery: CR2032 (Not Included) Frequency Range: 2.402 ~ 2.480GHz Receving Sensitivity: -94dBm Voltage: 2.7 ~ 3.2V Operating Environment: -20C ~ 70C Bluetooth Version: Bluetooth 4.0 Low Energy Support for IOS and Android systems: IOS7.0 or above; Android 4.4 or above; Models need to support bluetooth 4.0 standard Support Bluetooth Low Energy(BLE), support two-way alarm Working Distance: Within 25 meters (no obstacle) Scope: Cellphones, Wallets, Cars, Children, Pets And Other Ancillary Objects Item Size: Approx.3.8 * 3.8 * 0.5cm / 1.5 * 1.5 * 0.2inch Package Weight: Approx.9g Package List: 1 x Bluetooth Anti-lost Tracker 1 x Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.