This tracker should be used with iTracing, an app downloaded from App Store/Google Play and pair it to your phone via Bluetooth ?Anti-loss: chain the tracker with anything you may lose, press ALERT on your mobile app/apk to search the tracker within active distance ?Remote control: by remote control, you can turn on the cell phone record function or the remote camera shutter function for selfie self-portrait ?Locate the parking site on map before leaving from your car, help you trace back no matter how far you go away. ?Compact and lightweight, handy like a key ring, and you can pair up to 8 trackers simultaneously to a phone Product Descriptions: The tracker keeps in connection with your phone through the app iTracing, and you will be informed when they move out of effective distance range. It can protect your kids, seniors, pets, phone, wallet, baggage and laptop from being stolen or lost. By enabling the location tracking feature, the app can also track the location where you last saw the tracker. You can set your preference in the app, such as tracker sensitivity, sound types, and alarm volume. The tracker can also provide a last seen pin-drop on map to help you recover your items and search your cars in parking site.