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<div><p>Battery efficiency: CR203 button battery, lasting up to three months App software: Kindelf App voice: support English and Chinese Working distance: less than 23m Multi task management, a mobile phone can manage up to 6 anti lost devices at the same time. Compatible system: Apple IOS 5.0 or above / Android 4.3 and Bluetooth 4.0 Communication protocol: Bluetooth v4.0 + EDR Color:black and pink Function introduction: 1. Connect with Bluetooth function of mobile phone, two-way search function, and connect 10 anti lost devices at the same time; 2. In the connection state, when the anti loss device exceeds the set Bluetooth range, the mobile phone and the anti loss device will alarm at the same time; 3. Check the map location when the anti loss device is disconnected on the mobile phone; 4. Provide the function of no disturbance, and set the silence in a certain period of time to prevent the interruption of work and other important time; 5. Through the anti lost device to control the mobile phone shooting function, remote self shooting. 6. Control the recording function of the mobile phone through the anti loss device. Package Included: 2 x Bluetooth Tracer(Included 2PCS CR2032 battery) 2 x English manual</p></div>