Xiaomi (小米) Watch S5 released: new quad‑lamp array with four PD sensors, deep integration with Xiaomi Car (小米汽车), starting at ¥1,199

Launch and design

Xiaomi (小米) unveiled the Watch S5 at its spring product event, pitching the device as an "all‑purpose sports long‑endurance watch" with premium materials and a ¥1,199 starting price (¥100 first‑sale discount). The 316L stainless steel body comes in multiple bezel treatments: a ceramic "Midnight Blue" with 24 finely cut facets and a layered "Forged Carbon" option, plus three classic stainless steel bezel variants. An eSIM model is offered with a silver case and leather strap; Xiaomi also introduced new band colours including a pine‑green silk weave and a soft‑mist blue leather option.

Sensors, display and battery

The S5 debuts what Xiaomi describes as a four‑lamp PD sensor array for health monitoring. It has been reported that heart‑rate monitoring reaches 98.4% accuracy and that a new Sleep Algorithm 2.0 improves sleep entry/exit detection by about 11%. The watch uses a 1.48‑inch AMOLED panel with 480×480 resolution and a peak brightness of 2,500 nits. Xiaomi also highlights a new dual‑band GNSS chip that it has reported improves positioning accuracy by roughly 33%, plus a fresh cycling mode with lap‑timer functions and support for third‑party Bluetooth power meters. The company claims up to 21 days of typical battery life.

Car and smart‑home integration — and why it matters

The headline feature for ecosystem watchers is deep integration with Xiaomi Car (小米汽车). Xiaomi says the Watch S5 introduces a wrist‑level control centre that can link tightly to the automaker’s systems, offering proactive safety vibrations for fatigue driving or overspeeding and navigation reminders at junctions to avoid missed exits — reportedly compatible with the new‑generation SU7 and YU7 models. The watch can also display feeds from Xiaomi smart door‑lock cameras. Why embed these features in a watch? For Xiaomi, the S5 is another step in turning smartphones, wearables, EVs and smart‑home gear into a unified platform.

This launch comes as Chinese tech firms press on with vertical integration across devices and vehicles. Against a backdrop of heightened global scrutiny and export controls that have reshaped supply chains, companies like Xiaomi are doubling down on hardware‑software synergy to lock in users across an expanding ecosystem. Is the S5 primarily a fitness watch, a personal safety device for drivers, or both? Xiaomi is betting on all three.