This is a premium watch at a price of CNY 2,000 (US$ 275/€ 250/₹ 23,000). It has a titanium body and sapphire glass. It comes with a choice of four straps: fluoroelastomer, silicone, braided and titanium Milanese. These are suitable for different sports – the Xiaomi Watch S4 Sport can go diving down to 40m, it has been tested by PADI and has received an EN13319 diving certification. Xiaomi also partnered with watch maker Suunto for the sports tracking algorithms (e.g. measuring the lactate threshold).
For outdoor training, it supports five
GNSS constellations with dual-band reception. It also has offline map
capability and you can leave your phone at home thanks to the eSIM. We
mentioned the sapphire glass on the front, here’s what is below it – a 1.43”
OLED display with a peak brightness of 2,200 nits for outdoor readability.
Xiaomi managed to fit a surprisingly large 586mAh battery inside (the Watch S3
has a 486mAh battery) and advertises up to 15 days of battery life.
The heart rate and blood-oxygen sensor on
the back is also protected by sapphire glass. Xiaomi claims that the sensor
achieves 97.2% accuracy. One interesting feature is that the on-board NFC can
act as your car keys (only works on select vehicles).
