The Tile by Life360 Mate is a Bluetooth tracker, keys finder, and item locator specifically designed for keys. Made of black plastic, this GPS-enabled product is compact with dimensions of 3.78 x 3.78 x 0.71 cm and weighs 8.9g. It runs on 1 Lithium Metal battery (included) and can be easily tracked using the Tile app. Manufactured by Tile, this item finder is a reliable solution for finding your keys with precision and ease.