Chipolo Card 2-pack: Thin Bluetooth Item Finder
The ultra-thin Chipolo CARD plays a 95dB loud sound which enables you to find your missing wallet fast. It's also water resistant so you can use it in all conditions without having to worry about damaging your tracking device. At only 0.08 in (2.15 mm) wide, the Chipolo Card is about the size of a credit card and easily fits in your wallet. We've reduced the battery consumption significantly using Bluetooth low-power allowing up to 18 months of battery life. Free out of range alerts - No more leaving you home without your keys or wallet.