Features:1. Wireless connection: Connect with the wireless function of the mobile phone, and the two-way search function can connect 4 anti-lost devices at the same time.2. Alarm function: In the connected state, when the anti-lost device exceeds the set wireless range, the mobile phone and the anti-lost device simultaneously alarm.3. Accurate search: On the mobile phone, you can check the map positioning when the anti-lost device is disconnected.4. Silent design: Provides the do not disturb function, can set the mute within a certain period of time to prevent the work and other important time to disturb.5. Remote self-timer: Control the phone shooting function through the anti-lost device, remote self-timer.Descriptions:1.Adopt wireless new4.0technologypowerconsumptionisverylow,buttonbatteryCR2032powersupply,supportIOSsystemandANDROID4.3orabovesystem(wireless 4.0),anti-lostdeviceappearanceisbeautifulandstylish.Specifications:Material: ABSWearing method: hanging typeWireless distance: 10-15 metersColor: black, white, green, blue, pink(optional)Size: 52*31*11mmPackageincluded:1 pc* SmartWireless Anti-lost DeviceNotes:Pleaseallow0-2mmerrorduetoman