OnePlus Watch 4 arrives in titanium with Wear OS and a bold 16-day battery claim
OnePlus has unveiled the OnePlus Watch 4, a titanium smartwatch running Google Wear OS that is pitching unusually long endurance for a full-featured platform.
The company says the watch can reach up to 16 days in power-saving mode, with up to five days in typical use.
The Watch 4 appears closely related to the Oppo Watch X3, though OnePlus has adjusted details such as the bezel styling and strap design. It also pairs a titanium case with a sapphire crystal front and is rated for water resistance up to 50 meters.
How it targets longer battery life?
OnePlus says efficiency gains come from a modern LTPO OLED display and a dual-chip approach built around Qualcomm’s Snapdragon W5 Gen 1. A secondary BES 2800 co-processor is designed to handle lighter tasks more efficiently than the main Wear OS processor.
The watch includes 2 GB of RAM and 32 GB of storage, alongside a 646 mAh battery. Wear OS support means access to third-party apps, Google Wallet for NFC payments, and Google’s Gemini voice assistant where available.
Health sensors and regional limits
On the health side, OnePlus lists an ECG feature, but it is currently enabled only in China. The company has not confirmed whether ECG will be activated in additional regions, which can depend on local regulatory clearance.
Outside China, the Watch 4 still supports heart-rate tracking, SpO2 readings, and skin temperature sensing, plus a 60-second health check that gathers multiple metrics at once. OnePlus also advertises more than 100 sports modes for workout tracking.
Pricing and early availability
OnePlus has posted the Watch 4 on its official product pages, but has not published an official price or full retail rollout details.
Early third-party listings have appeared in some markets, suggesting international availability could follow once regional configurations are finalized.
If OnePlus can match its stated battery figures in real-world Wear OS use, the Watch 4 could stand out in a segment where multi-day life often requires major feature compromises. Independent testing and regional feature confirmations will likely shape how competitive it proves at launch.
