Key finder, tracker, bicycle bottle cage or bottle holder, fits most bicycle frames, BT 5.2, IPX67 waterproof rating, works with iOS (Find My app) and Android (Location Center app), range up to 100 m, tracker connects to nearby devices, allowing easy tracking even on the other side of the world, remote sound alert activation for easier locating, includes battery (CR2032), tracker does not work with Huawei devices