GPS tracker for pets: Key finder uses BT 4.0 technology to connect Android, iOS, iPad, and other smartphones. Show the lost car key, luggage, wallet, dogs, and cats a distance from you on the APP to let you find them accurately. APP remotely control: Download the free APP “Racing” then pair it with your smartphone. When you press the remote button, the receiver sounds "beeps" You can hear voices from the GPS tracker within 100 ft. The 4-pack GPS tracker locator contains black, green, blue, pink, and white for kids, pets, and phones. Two-way notification: Attach this wireless tracker to anything we always forget key or wallet and keep track of them, the 2-way key finder will let you track lost items or be notified when they are out of range with a ring or flash. Finder keychain: The key finder smart tracker is compact, lightweight, and easy to carry like a key chain on your kid's schoolbag or hang on a pet collar, The real-time viewing locator effectively prevents your kids, and pets are lost. Provide a last-seen pin-drop on a map via the APP to help you recover your items and search your car in the parking site. Multi-function: Anti-lost alarm, GPS tracking device, remote control self-portrait. Works as a remote shutter for self-portrait, You can remote control the smart phone camera of your with press on the finder button.