These SILCA Chipolo Classic Bluetooth Key Finders are ideal for the tracking and locating of keys and bags when misplaced or lost - simply attach the device to your valuable item and connect it to the free Chipolo app (compatible with iOS 9 and later, and devices running Android 4.4 and later). The app enables you to ring your Chipolo device to locate your items, and you can also double press the device to ring your phone to locate it, even when on silent mode. They come with a standard CR2025 battery which has a 9 month battery life and is easily replaceable, ensuring the device is long lasting and cost effective. They have a range of 200 feet and show the last location of your item on a map within the app. This pack of 6 comes with each Chipolo individually packaged in a handy POS display box, and includes one of each colour - red, yellow, green, white, blue and black.