Tile trackers are useful for keeping track of all sorts of stuff. The most obvious place to put them is your keys, but the sky’s the limit. Lose your purse a lot? Stick a Tile in it. Water bottle constantly finding itself everywhere except where you expect it to be? Attach a Tile to it. Lose your phone on a daily basis? Use Tile’s reverse tracking feature to make it ring.

One of the most significant issues with Tile trackers was the irreplaceable batteries, but the newer models promise one year of battery life and a CR1632 battery you can replace yourself.

With this deal, you’re getting each Tile tracker for $13.75, which is relatively cheap when you compare that to the price of replacing a car key or getting a new purse.

The far more expensive Apple AirTags have revitalized the Bluetooth tracker market, but Tile has long sat atop the tracker throne. Rather than spending $99 for a four-pack of AirTags, your money is much better spent on these, and you can use the extra $45 to buy things to track with your new Bluetooth trackers.