The OnePlus Watch 4 has been officially announced, showcasing a robust design with an all-titanium case available in Evergreen Titanium and Midnight Titanium. This smartwatch is powered by the Snapdragon Wear W5 SoC and features 2GB of RAM and 32GB of storage. One of its standout features is its impressive battery life, offering up to 16 days in power saver mode and five days in smart mode, thanks to its 646 mAh battery that charges fully in about 75 minutes. The watch is equipped with a 466x466 resolution LTPO OLED display with a peak brightness of 3,000 nits and is protected by sapphire crystal. It supports over 100 sports modes, with six modes featuring automatic recognition, and includes various health sensors such as heart rate and blood oxygen monitors. Additionally, the watch is rated 5ATM, IP68, and IP69 for water and dust resistance. While it is a rebranded version of the Oppo Watch X3, the OnePlus Watch 4's notable upgrades include the titanium case and the latest Wear OS 6. Pricing and availability details have yet to be announced.