How long does the battery last?

Xiaomi rates it at up to 6 days in smart mode, up to 4 days with always-on display on, and up to 18 days in power-saving mode. Those figures come from Xiaomi's own tests, so heavy GPS and app use will shorten them.

Does it work with an iPhone?

It runs Wear OS by Google, which is built around Android. Some basics work with iOS, but app support, Gemini and notifications are far more limited than on an Android phone.

Is it too big for a small wrist?

At 47 × 47 mm and about 56 g without a strap, it is one of the larger smartwatches. It suits medium to large wrists; smaller wrists will find it bulky, especially during sleep tracking.

The watch, a magnetic charging dock and the documentation. A strap is fitted, but a spare strap is not included.

How does it compare with the Xiaomi Watch S4?

The Watch 5 steps up to a steel case, sapphire glass, a bigger 930 mAh battery, the Snapdragon W5 Gen 1 chip and 32 GB of storage. The S4 is lighter and cheaper but uses a smaller screen and less durable materials.

It has over 150 sport modes including pool swimming, but check the water-resistance rating for your exact model before wearing it in open water or a hot shower.