Keep track of your items with the eufy Smarttrack Link Bluetooth tracker card. You can place it in your wallet or handbag or attach it to your car keys to locate them quickly when lost or misplaced. It also helps you find your smartphone even if the phone is on silent mode. This Bluetooth tracker card comes with IPX4 rating for protection from splashes. | eufy Smarttrack Link Bluetooth Tracker Card - 1 Pack - Black