1, ADVANCED TECHNOLOGY: This anti-lost device adopts the latest Bluetooth 4.0 low-consumption technology, and through the corresponding APP to realize all functions. 2, EASY TO USE: Keep tab on your keys, or any other valuables, using your wireless device by attaching this tag to any item you choose. Simply track the finder on your smartphone APP and reunite with your lost valuables. 3, EFFECTIVE PROTECTION: It can effectively protect your kids, pets or valuables from being stolen or lost within 10m effective distance range, when out of this range, your phone and this device will automatically ring for timely warning. 4, SUITABLE FOR: Wallets, cars, pets, kids, handbags, suitcases, etc. 5, WIDE APPLICATIONS: Easily attach this small tracker to kids' backpacks, a set of keys, dog and cat collars, luggage, wallets and more for hassle-free carrying.