ultra wideband airtag

Ultra Wideband (UWB) expands Precision Finding. Combined with upgraded Bluetooth chips, UWB helps an AirTag be located from farther away and provides step‑by‑step directions on supported devices.

They use Bluetooth for basic connections and UWB for more precise, directional locating. Trackers also rely on a locating network that can combine signals such as UWB, GPS, Wi‑Fi, and cellular to help find items.

Options include a user-replaceable CR2032 lithium coin cell (used by AirTag) and an integrated rechargeable battery (for example, a listed 180 mAh battery in a wireless keychain tracker).

Listings show single-unit packs and multi-packs. Examples in the listings include 1‑per‑pack and 4‑per‑pack options.

Listings generally report battery life around one year. Rechargeable keychain trackers list up to 12 months per charge, while replaceable‑battery trackers (CR2032) list about one year or say "more than a year" in descriptions.

Some keychain trackers include a built‑in speaker rated around 80–90 dB. Other listings mention an enhanced speaker that’s about 50% louder than prior models and a new, distinctive chime for audible alerts.

Keychain trackers commonly include a metal keyring or attachment loop, durable materials for daily wear (for example, a vegan‑leather exterior on one model), and rated protection such as an IP66 dust/water rating plus testing for humidity, friction, temperature, and strength.