Launched last spring, Xiaomi’s Watch S1 represented the brand’s first offering in the premium smartwatch segment. Steel case, sapphire crystal, leather strap… Xiaomi had spared no means to make it a watch that did not have to be ashamed of the competition, and we had also appreciated the quality of its finishes during its full test. Five months later, here is its evolution, the Xiaomi Watch S1 Pro, even more luxurious and better equipped.
Bigger screen, smaller clock
Like many “Pro” variants, Xiaomi’s Watch S1 Pro benefits from a larger Amoled display, here reaching a diagonal of 1.47″ (480 x 480 pixels), compared to 1.43″ (466 pixels). x 466 pixels) of the Watch S1. Paradoxically, the S1 Pro is, however, smaller than the S1, its case diameter being reduced by 0.5mm, to 46mm. In fact, the edges of the screen have been refined.
The design of the S1 Pro is also intended to be slimmer, with a steel case with narrow edges and now incorporating thin lugs between which the ends of the bracelet are fixed. A bracelet always in brown leather or in black Viton, for the classic versions of the S1 Pro. A stainless steel bracelet is available as an option.
Sapphire and ceramic
The novelties are also found on the back of the watch, which is adorned with a ceramic coating. The island of sensors is for its part protected by a sapphire crystal, like the screen, to prevent scratches. The screws disappear at the same time, leaving an immaculate and easy-to-clean rear.
A new battery for more autonomy
Under this new cover, Xiaomi has integrated a higher capacity battery, increasing to 500 mAh, compared to 470 mAh of the S1. Which adds up to two days of autonomy according to the manufacturer, which announces up to 14 days of operation in classic use and up to 10 days in intensive use. The thickness of the watch hardly increases (+0.28 mm, up to 11.28 mm).
As for charging, we are pleased to learn that the Watch S1 Pro supports reverse induction charging. A feature we would like to see more often! Enough to recharge it from a compatible smartphone (Xiaomi 12S Ultra, 12S Pro, MIX 4, Mi 11 Ultra, Mi 11 Pro…).
A skin temperature measurement with internal algorithm
On the sensor side, of course, there is the measurement of heart rate and blood oxygen saturation (SpO2), but now also skin temperature. And unlike Samsung, which doesn’t get wet with its Galaxy Watch 5 by letting developers use this latest measurement, Xiaomi features an internal algorithm that supposedly interprets skin temperature to provide a more reliable indication. It remains to be seen whether this measure can be really relevant as it stands, the peculiarity being that the temperature of the skin is highly variable, particularly at the level of a member as thin and exposed to variations in outside temperature as the wrist.
However, there is still no EKG feature on this Watch S1 Pro, unlike the latest Galaxy Watch and Apple Watch.
For the rest, it has a dual-band GPS and GNSS chip, microphone and speaker to manage phone calls through Bluetooth, Wi-Fi and NFC. A 5 ATM certification guarantees that the watch can be used for swimming, for example. More than 100 sports modes are also offered.
The Xiaomi Watch S1 Pro is currently only marketed in China, priced at 1,499 yuan, or approximately €216 excluding tax. A price 36% higher than the Watch S1 when it was launched (1099 yuan, or approximately €158 without tax). The latter launched in France at €269.99 and is now around €200 in online stores.
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