Xiaomi’s tracker doesn’t need a case to clip to your keys
Source: The Verge
Overview
The Xiaomi Tag is a bit larger than Apple’s second‑gen AirTags.

Xiaomi has announced its first Bluetooth tracker. While the Xiaomi Tag has a more elongated design than the Apple AirTag, this shape lets you use it in more places right out of the box. On one end of the tracker there’s an integrated metal loop that can be attached to a keyring or clipped to a carabiner without needing an extra case.
The Xiaomi Tag is compatible with both Apple’s Find My network and Google’s Find Hub tracking networks and mobile apps, but not simultaneously. During setup you must choose one network or the other. Like Apple’s AirTag, the Xiaomi Tag is powered by a replaceable CR2032 coin‑cell battery that lasts up to a year.