Xiaomi Watch S3 features a 1.43" AMOLED display at 466 x 466 resolution and 600 nits brightness, protected by scratch- and drop-proof glass in an interchangeable-bezel design.
Battery life reaches up to 15 days on Android (14.5 on iOS), and a 12-channel heart rate monitor with an upgraded algorithm improves accuracy during workouts. A 5-minute fast charge adds up to two full days of use, and 5ATM water resistance covers daily wear and swimming. It connects via Bluetooth 5.2, NFC.
The interchangeable bezel design is what sets the S3 apart from most smartwatches, letting you swap the look to match an outfit or occasion rather than being stuck with one fixed appearance. The 5-minute fast charge adding two days of use is a genuinely practical feature for anyone who forgets to charge overnight.