The OnePlus Watch 4 is a smartwatch built for people who want a capable daily companion without compromising on durability or battery life. Its full titanium alloy case weighs just 43g at 11mm thick, making it light enough to wear through workouts and overnight sleep tracking without feeling bulky. The 1.5-inch LTPO OLED display delivers a sharp 466×466 resolution protected by sapphire crystal glass, reaching a peak brightness of 3,000 nits during outdoor sports sessions. Under the hood, a dual-engine setup pairing the Snapdragon W5 with the BES2800 co-processor handles both performance and power efficiency, enabling up to 5 days of smart usage and 16 days in power saver mode. Running on Wear OS 6 with built-in Google Gemini support, the Watch 4 covers health monitoring, 100+ sports modes, and a 60-second full wellness check — all from your wrist.

Key Features:

Full Titanium Alloy Build — Lighter Than You'd Expect Unlike most smartwatches in this segment that use stainless steel, the OnePlus Watch 4 uses a full titanium alloy case across the entire body. The result: 43g of weight and 11mm of thickness, making it 13% lighter and 6% slimmer than its predecessor. You'll feel that difference during long training sessions and overnight wear.

1.5" LTPO OLED with Sapphire Crystal Glass The display measures 1.5 inches with 466×466 pixel resolution, covered by scratch-resistant sapphire crystal glass. Brightness reaches 1,500 nits in strong sunlight and peaks at 3,000 nits during compatible sports modes — clear and readable outdoors without any manual adjustments.

Dual-Engine Architecture: Performance Meets Efficiency The Snapdragon W5 handles the full Wear OS experience — apps, notifications, and Google Gemini. The BES2800 co-processor manages background tasks like health monitoring while keeping power draw low. Paired with 2GB RAM and 32GB of storage, the watch runs smoothly without the lag common in Wear OS devices.

646mAh Battery with 7.5W Fast Charging The battery lasts 5 days in smart mode, 3 days with heavy use including GPS workouts and always-on display, and up to 16 days in power saver mode. A full charge takes 75 minutes, and just 10 minutes of charging delivers a full day of use.

MIL-STD-810H + IP69 Durability The Watch 4 is certified against 16 military-grade stress tests including salt spray, sand, temperature shock, and freeze rain. It also carries IP68, 5ATM, and the added IP69 rating — meaning it can withstand high-pressure and high-temperature water jets. Wet-hand touch control keeps the screen responsive even when your hands are wet.

60-Second Wellness Overview A single touch launches a comprehensive health snapshot combining real-time readings — heart rate, blood oxygen — with historical trends like wrist temperature and sleep data. It gives you a quick, meaningful read on your overall health without digging through separate app screens. Note: ECG availability within this feature depends on regional certification.

Multi-Band GPS: L1+L5 Across 5 Systems The Watch 4 supports GPS, GLONASS, GALILEO, BDS, and QZSS on dual-frequency bands (L1+L5). This improves location accuracy in urban environments where tall buildings can distort single-band signals — useful for anyone tracking outdoor runs or rides in dense city areas.

Wear OS 6 with Google Gemini Built In OnePlus Watch 4 is among the first smartwatches to launch with Wear OS 6, bringing a cleaner UI alongside full Google Gemini integration. Say "Hey Google" to send a message, set a reminder, or get quick answers — no need to reach for your phone.

100+ Sports Modes and Fall Detection Sport coverage spans land and water activities, including sea water swimming. Fall detection automatically triggers an emergency alert if a hard fall is detected and there's no response — a practical safety feature for solo outdoor activity.