Designed for your wallet. Sized for everything else. The Tracker Card works with both Apple and Android. Pair it with the free Apple Find My or Google Find Hub app and you can track it from anywhere in the world, no subscription required. Slip it in your wallet, your luggage, your bag, your car, or anywhere else. Ring it when it's close, follow the map when it's not, and automatically get a notification on your phone the moment you leave it behind. It's water-resistant, 1.9mm thin, and has a rechargeable battery that lasts up to 10 months per charge.