Features:Parking site searchingVoice recording & Self-portraitBluetooth connection with 2 more anti-lost devices simultaniously.Simply track the lost items on your smartphone APP.Anti-lost to protect your kids,pets and valuables effectively.Attach to keys,wallets,phones,watches,pets,kids or other valuables.Low Energe consumption,with replaceable Battery:CR2032 Lithium Coin Battery,Lasts for about half a year,you can easily replace it yourself.Mini and compact to carry.Specifications:Materials:PlasticColor:2xWhite+2xBlackQuantiti:4pcsShape: Square(37*37mm)Working Distance:25mOutdoor environmentBattery:CR2032 Lithium Coin Battery 1.Find lost things-Ring your lost things by smartphone within Bluetooth range, the anti-lost device will play a loud tune until you find it.2.Find your phone-Double press the button of anti-lost device,to make your phone ring.3.Last place seen-Keep your Tile app running in the background and it will remember the last place and time you had your item.4.Activate Community Find-Connect to one of the largest lost-and-found community, where everyone using the app within range of your lost item can update its location for you.Compatible Devices: Bluetooth Version:Bluetooth 4.0 Low Energe consumptionApple system IOS11.0 (Above IPhone5S ) & Above Android system 9.0Operations:1.Switch:*Power on:After press for about 3 seconds,"di di di"three beeps,the indicator flashes quickly for 10seconds,no connection,no button operation and every 2 seconds continue to flash for 30 seconds then shut down.*Shutdown:After a long press for about 3 seconds,a long beep"drip" and the indicator light goes out.2.Add equipmentOpen the smartphone bluetooth,enter the APP to skip the boot interface,and directly enter the "Add device"interface.Please see the Instruction manual for more details about Android & IOS different interface page.Click the "Add device"icon in the interface and the figure will appear.After searching for a new device,click Auto Connect,as show in the figure.(You can also edit the device name as needed)After connecting,click the alarm icon,as show in the figure,you can hear the anti-lost"drip"alarm sound,then you can find the anti-lost device.The "drip"sound can be called continuously,such as clicking the alarm icon again,the sound stops.Enter the setting interface,you can alarm ringtones,alarm distance selection,etc.as show in the figureClick"System settings"to view the recording file and set the double-click option as shown in the figure3.Taking pictures*Use the camera function and click the anti-lost device to achieve the camera function.4.PositioningThe function can only keep the position when the anti-lost device is disconnected from the mobile phone,and the position of the disconnection can be found in the "lost record",for this feature,you need to turn on the GPS and the phone stays connected to the network.Package:4 x Anti-lost Tracker(2x White + 2x Black )When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to . We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it