The smartwatch market is crowded, and standing out requires more than just a spec bump. After spending some serious time with the Xiaomi Watch S5, it’s clear that Xiaomi isn’t just updating a wearable; they are refining their entire approach to the wrist. Ditching the gimmicks of the past, the S5 leans heavily into ultra-long battery life, premium aesthetics, and aggressive integration with the “Human x Car x Home” ecosystem.
Currently exclusive to the Chinese market—though we fully expect a global launch alongside the upcoming Xiaomi 17T series—here is our comprehensive review of why the Xiaomi Watch S5 punches way above its weight class.
A Return to Premium Unibody Design
The first thing you notice when strapping on the 46mm Watch S5 is the shift in build quality. Xiaomi has officially retired the replaceable bezel design of the S4. While some fans might miss the customization, the move to a one-piece, forged 316L stainless steel case is a massive upgrade.
It feels incredibly solid and looks like a watch that costs triple its actual price. Because of this streamlined design, the AMOLED screen has been bumped up to 1.48 inches with razor-thin bezels. Running at a peak brightness of 2500 nits, checking notifications in direct sunlight is completely effortless. For those wanting maximum luxury, the “Midnight Blue” edition with its 24-facet carved zirconia ceramic bezel is an absolute showstopper.
The 815mAh GSR Battery: A Complete Game Changer
Let’s talk about the real MVP here: endurance. The S5 is packing an 815mAh GSR battery (utilizing a high silicon-carbon negative electrode). Paired with the highly efficient Hengxuan BES2800BP Bluetooth AP chip, the battery life is almost comical.
In our real-world testing, even with Always-On Display (AOD) active, continuous health tracking, and the high-precision 4PD heart rate sensor working overtime, the battery barely takes a hit. Whether you are on a long-term fitness journey—like grinding down from 117kg to 105kg—or simply tracking those exhausting 17-flight stair climbs three to four times a week, you don’t have to worry about the watch dying on you.
The official claim of up to 21 days of battery life isn’t just marketing fluff; it’s a reality that completely cures battery anxiety.
Xiaomi HyperConnect: The Ultimate Wrist Remote
Running on Xiaomi HyperOS for Wearables, the S5 proves its worth as a central node for Xiaomi HyperConnect:
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Super Island: Taking a page from the smartphone playbook, real-time updates for food deliveries and ride-hailing now live in a capsule at the top of the watch face.
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Smart Home Linkage: If you have a compatible door lock (like the M40 Pro), ringing the doorbell pulls up the live exterior camera feed right on your wrist. It’s a killer feature for anyone living alone.
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Xiaomi EV Integration: For Xiaomi SU7/YU7 owners, the watch acts as a Bluetooth key, provides haptic feedback for navigation nodes, and even vibrates heavily if the car detects driver fatigue.
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Pro Cycling Mode: The watch syncs seamlessly with your phone, turning your mobile display into a real-time variator/stopwatch while the watch handles the GNSS tracking (which is 30% faster and 33% more accurate thanks to the new dual-band chip).
Market Impact & Pricing
As it stands, the Xiaomi Watch S5 is an absolute steal. Converted from Chinese Yuan, the standard 316L stainless steel models start at an incredibly aggressive $165 USD (1199 CNY). Even if you opt for the premium eSIM, Ceramic, or Forged Carbon editions, you are only looking at roughly $195 USD (1399 CNY). Early adopters in China are even getting a ~$14 USD discount right now.
If you want a traditional mechanical aesthetic without sacrificing the bleeding-edge smart features of the Xiaomi ecosystem, the Watch S5 is a no-brainer.
Xiaomi’s Strategy Moving Forward
With the S5, Xiaomi is proving that wearables don’t need heavy, battery-draining OS architectures to be “smart.” By utilizing HyperOS for Wearables, they’ve struck the perfect balance between longevity and utility.
