①. The smart key tracker is a useful gadget that alerts you when you are about to forget your belongings. Pair it with the app and launch it. The phone and the key finder will ring and notify you when they are disconnected. It is suitable for traveling to prevent loss. ②. Portable: This key finder is small in size and lightweight. Even if it is hung on a school bag or pet collar, it is less likely to fall off. ③. Long - lasting and stylish battery: The Bluetooth key tracker is powered by a CR2032 battery with a long standby time (more than 10 months). It can be easily replaced for long - term use. It has a delicate and elegant appearance that resembles a work of art. ④. Easy and quick location: Just press the button and follow the beeps to find your key, backpack, luggage, wallet, TV remote control, glasses, dog collar, camera or other items. You can find your lost items relatively easily with smart trackers. ⑤. Multifunctional: It has an anti - lost alarm, GPS tracking, and can also be used as a self - timer remote shutter release and selfie remote control.