Sleep Wearable Form Factor
Compare smart rings, fitness bands, and smartwatches for overnight sleep tracking: comfort, battery habits, and sleep metric depth.
Xiaomi Watch S4 Black Always-on AMOLED display
No current offers
Saved product information may be incomplete. Check the selected variant and package contents; availability elsewhere is not verified.
Last known price: BYN 649.00 (BYN)
Price source: Rulez BY
Price record dated 7/24/26
Saved price in the source currency; not a current offer. The date refers to the price record, not a stock check.
Features
- Always-on AMOLED display
- Built-in GPS and NFC
- Heart rate & SpO2 monitoring
- 15-day battery life
- 32 GB music storage
- 5 ATM water resistance
- Amazon Alexa voice assistant
- Sapphire glass durability
- Fast magnetic charging
- Sleep & stress tracking
General specs
- Brand: Xiaomi
- Model: Watch S4
- Seller: Rulez BY
- ID: 1080162
- Brand: Xiaomi
- Model: Watch S4
- Version: International
- First listed by seller: June 17, 2026
For the active professional who shifts from morning meetings to evening workouts, the Xiaomi Watch S4 streamlines your day. You glance at the brilliant 1.43-inch AMOLED screen to check a calendar alert, then tap to answer a call without reaching for your phone. The aluminum case and sapphire glass shrug off scratches, while the soft silicone band remains comfortable after hours of wear.
This smartwatch does more than track steps. Ask Amazon Alexa to start your running playlist or check the weather as you head out. The 1500-nit display cuts through glare, so you monitor your heart rate mid-run with perfect clarity. With built-in GPS and 32GB of storage, you leave the phone behind and stream music directly from your wrist. NFC payments buy your post-workout coffee in seconds.
Sleep tracking, SpO2 measurement, and stress monitoring give you an honest view of your recovery. The 5 ATM water resistance handles swimming sessions, and a fast magnetic charge tops up the battery in minutes. Your assistant and coach, always on display.
When this device makes sense
Product confidence
Reviews
There are no text reviews yet. If you have experience using this product, please leave a review. It will help other people decide whether this product is right for them.