Summary
Highlights
Design and Build Quality00:01:04
The watch features a high-quality aluminum case and a replaceable stainless steel bezel. It feels robust and well-crafted for its price point of around 140-160 euros, though it wears a bit thick on the wrist.
Display Performance00:04:27
The AMOLED display offers excellent outdoor readability even in direct sunlight, with a peak brightness of 2200 nits. The 60Hz refresh rate is sufficient for a device of this category.
Battery Life and Charging00:05:21
Battery life is disappointing compared to marketing promises. Users can expect about a week with light usage, but this drops to roughly four days with intensive tracking and Always-On Display enabled. Charging is limited to a basic wired contact base rather than wireless charging.
Tracking Accuracy00:09:21
Step counting and pulse tracking are solid and comparable to more expensive devices. However, sleep tracking is significantly inaccurate and unreliable, often failing to correctly identify sleep phases or duration.
Communication and Smart Features00:13:20
The built-in microphone and speaker are subpar, making phone calls difficult in noisy environments or windy conditions. Smart features are limited, lacking a broad app store and robust NFC payment support.
Final Verdict00:19:07
For current Xiaomi Mi Band users, the Watch S4 does not provide enough extra value to justify the significantly higher price. It is an affordable alternative for those wanting a 'real' watch look, but it lacks the polish and functionality of top-tier smartwatches from competitors.