Mate has a new modern shape and also comes in black, with a bigger range and longer lasting battery. Attach Mate to everyday things like keys and bags, and use our free app to find them. Up to 250 ft / 76 m Bluetooth range, Up to 3-year non-replaceable battery, Water-resistant, Works with Android and Apple devices, Voice-assisted finding with Alexa, Google and Siri. 1.48" W x 1.48" H x 0.28" D