Specification: Viewfinder distance: 0-100 feet BT version: BT 4.0 Colors: 1 x Black, 1 x Green, 1 x White, 1 x Pink-. Battery: Includes CR2032 lithium coin cell (replaceable). Compatible Devices: IOS: 7.0 or later Android: 4.3 or later compatible with iPad-: compatible with iPad- 1/2/3/4 or higher, compatible with iPad-mini-2/3/4 or higher, iTouch 5, compatible with iPad-Pro 3/4 or higher, compatible with iPad-air or higher High version. Connect the app A-Search for "ctrouting" in Google play store or compatible with Apple-App store, or get the download link by scanning the QR code on the box, and then download the app; B——Long press the button on the smart locator, and the LED light will turn on when you hear two beeps of “dididi”; C - Search for the smart locator and connect to the app, swipe left to delete the tracker-, touch the ">" icon to rename the smart locator or disconnect; D - Long press to close. camera function Smart Locator and App Connect: - In the app's camera interface, take a photo with the push of a button. Package: 1 x Key Finder (Black, Green, White, Pink-) How to use: Please refer to the manual Product material: ABS + electronic components Packing List: 1*tracker- 1 * English manual notes: 1. 1 inch = 2.54 cm 2. Please measure by yourself to choose the right size. 3. Due to the difference of different monitors, the picture may not reflect the actual color of the item. Thanks! Uses BT 4.0 technology to connect with Android, iOS, compatible with iPad, and other smartphones Displays the distance to lost items such as car keys, luggage, wallets, and pets on the app Download the free "ctracing" app to pair with your smartphone for easy tracking Receiver beeps when the remote button is pressed, allowing you to locate items within 75 feet Includes four GPS tracker locators in Black, Green, Blue, Pink, and White for versatile use