The Apple Airtag is a small coin-shaped device that you can put in your wallet or attach to your phones, keys, remote, or anything small enough to be easily misplaced. It works as a little Wi-Fi keyfinder that helps locate your lost objects by pinging its general location to your iPhone using Bluetooth 5.0. However, if your iPhone model has a U1 chip with Ultra Wideband, then you can take advantage of the "Precision Finding" mode. This gives you numerical distance and direction guidance when your lost item is close by. It points you right to it.
The CR2032 coin battery is user-replaceable, so your AirTag won't end up in a landfill when the battery depletes, nor will you have to deal with battery degradation like you would with a non-replaceable lithium battery.
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