Apple AirTag (2nd generation)
$29
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iPhone users with keys and bags
11.8 g, IP67, and a user-replaceable CR2032. Apple says the battery lasts more than a year. It only works fully with iPhone.
Read: Apple AirTag 2 review: what changes for travel
Price checked November 2, 2026
| Network | Apple Find My |
|---|---|
| Battery life | More than a year, per Apple |
| Replaceable battery | Yes, CR2032 |
| Weight | 11.8 g |
| Water rating | IP67 |