OnePlus Watch 4 joins Wear OS 6 ecosystem with titanium case and rugged build. The watch features two color options: Evergreen Titanium (silver-green) and Midnight Titanium (dark gray), with a Snapdragon Wear W5 chipset and BES2800 co-processor for efficiency. Its 646 mAh battery delivers 16 days in power saver mode or five days in smart mode, charging to full in 75 minutes via 7.5W wireless charging.

Built to MIL-STD-810H military-grade standards, the device offers full seawater corrosion resistance, IP68/IP69 dust/water resistance, and 5ATM pressure tolerance. The LTPO OLED display (466x466 resolution, 3,000-nit brightness) sits beneath a sapphire crystal, while 2GB RAM and 32GB storage handle 100+ sports modes (including six auto-recognition types). Sensors track heart rate, blood oxygen, wrist temperature, and environmental metrics.

OnePlus Watch 4 rebrands Oppo Watch X3, replacing stainless steel with titanium for 10g weight reduction and enhanced brightness. Compared to Watch 3, it retains similar battery capacity (646 vs 648 mAh) but gains Wear OS 6 integration, a thinner profile, and improved display tech. Dual-band Wi-Fi, Bluetooth 5.2, and multi-GNSS support (Beidou/Galileo/GLONASS/QZSS) round out connectivity.

Price and availability remain undisclosed, but the wearables market continues consolidating around Wear OS 6. Analysts note the titanium upgrade signals OnePlus prioritizing premium materials, though the 2 mAh battery downgrade from Watch 3 raises minor concerns. The device’s 5ATM/IP69 rating positions it among the most rugged smartwatches available.