Fred Slim is a tracker the size and shape of a credit card, just 1.8mm thin. It slides into your wallet, purse or card holder and tracks from the app already on your phone. Recharge it wirelessly, no battery swaps needed. Great for: Wallets, purses, passport holders and card slots. Best for minimalists who want a tracker that disappears into the things they already carry. Features at a glance: Works with Apple Find My or Android Find Hub Credit card shape, just 1.8mm thin Qi wireless charging, no battery swaps Top hole for threading your own lanyard or clip No account sign-up needed Fits standard wallet card slots 2-3 months Battery life(depending on usage)