Keep track of your essentials with this brand new, unopened Chipolo Classic Bluetooth tracker in vibrant Red. It easily attaches to keys, luggage, backpacks, or wallets and connects to your phone to help you find lost items instantly. Condition: Brand New in box (NIB) Color: Red Model: M45S Battery: Replaceable CR2025 battery (lasts up to 9 months) Compatibility: Works with iOS and Android devices via the Chipolo app Connectivity: Bluetooth Smart technology. Key Features Ring Your Items: Use the smartphone app to play a loud sound on your Chipolo. Find Your Phone: Double-click the Chipolo to make your misplaced phone ring (even on silent). Community Search: Mark items as lost to get location updates from the Chipolo community network. Replaceable Battery: No need to buy a new tracker when the battery dies; easily swap it out yourself.