Clip this lightweight Bluetooth tracker to your pet's collar so you can find them fast if they wander off nearby. Pairs with a free finder app on iPhone and Android, plays a locator alarm, and shows the last-known location on a map. Heads up: this is a Bluetooth tracker with about a 50 ft (15m) range, not a cellular GPS tracker - great for locating a pet in the house, yard, or nearby neighborhood, but it won't track a pet that's traveled far out of range. Weighs just 9.2g, durable ABS shell, replaceable coin battery.