Xiaomi has taken the Watch S5 46mm global, pairing a sharper AMOLED screen, a bigger battery, and a few oddly specific fitness tricks with HyperOS 3. The headline claim is simple enough: this is a more polished smartwatch than the last round, but Xiaomi is also leaning hard into battery endurance and niche sports modes to stand out in a crowded mid-premium field.
The Xiaomi Watch S5 46mm arrives as rivals from Samsung, Garmin, and Huawei keep pushing harder on battery life, display brightness, and health tracking, so Xiaomi is trying to answer all three at once rather than just chasing another slimmer case.
Xiaomi Watch S5 46mm display and design
The Watch S5 keeps a circular shape with a 316L stainless steel frame, weighing 46 grams and measuring 10.99mm thick. Up front, there is a 1.48-inch AMOLED display with a 480 x 480 resolution and peak brightness of 2,500 nits, which should make it easier to read outdoors without doing the usual wrist-twist dance.
Xiaomi says the bezels are 2.6mm thick, a 40% reduction from the previous model, and the display includes wet-touch protection so water droplets do not register as taps. Small detail, big quality-of-life win.
Xiaomi Watch S5 46mm battery life and fitness features
Inside is an 815mAh battery, with Xiaomi estimating up to 21 days of battery life for light usage. Standard use is rated at 14 days, or 9 days with the always-on display enabled. That is the kind of number that makes many other smartwatches look a bit needy.
- Over 150 sports modes
- Updated dual-band, five-system GNSS chip
- Offline maps and backtracking
- Cycling mode with smartphone bike-computer sync
- Support for third-party Bluetooth power meters
- Skiing mode with fall detection and emergency calling after 60 seconds of unresponsiveness
- ”Passion mode” for tracking cheering gestures like clapping and arm waving
The cycling and skiing tools are more useful than they first sound, especially the external sensor support and emergency handling. Passion mode is the sort of feature that sounds like a product manager lost a bet, but it does show Xiaomi is willing to experiment beyond the usual step-counting basics.
Xiaomi Watch S5 46mm health tracking and HyperOS 3 features
For health tracking, Xiaomi has fitted a new four-LED, four-PD sensor for heart rate and blood oxygen monitoring, and says heart rate tracking is 98.4% accurate. The company also says it worked with international sleep societies to update its sleep tracking algorithms, which is the sort of detail that matters more than flashy app demos if you actually wear the thing to bed.
Running on HyperOS 3, the watch can connect to Xiaomi Smart Hub for smart home control, remote camera operation, and NFC payments through Mastercard and Visa. That puts it firmly in the ”do a bit of everything” smartwatch camp, where battery life and platform polish often matter more than one killer feature.
Xiaomi Watch S5 46mm price and availability
- Black and Silver: €179.99 / £149.99
- Jungle Green and Ceramic Blue: €199.99 / £169.99
The Xiaomi Watch S5 46mm is available now, with the higher prices reflecting different strap materials and bezel finishes.
The real question is whether Xiaomi can use this model to keep pressure on larger smartwatch brands that charge more for less battery. If the company can back these specs with stable software and decent regional rollout, the Watch S5 46mm could be one of the easier wearables to recommend in its price band.