Lost item prevention tag, made overseas. This was a gift, and I don't know how to use it, so I'm selling it. Please research how to use it yourself. Unused, only opened. No individual sales. [The following is a quote from the product description] This is a smart tracker (lost item prevention tag) called "Smart Finder." Attach it to important items like keys, bags, and wallets to prevent loss or misplacement. Using Bluetooth or GPS, you can track the item's location and check it on your smartphone app. The product shown in the image is compatible with Android, iPhone, and iPad. ☆Will be shipped via Yu-packet Post.