OnePlus has a habit of building hype around its launches. Big announcements, countdown pages, the whole thing. So it’s a little strange that the OnePlus Watch 4 just quietly appeared on OnePlus’ official global website with a full spec sheet, no press release, no event, and no pricing or release date attached to any of it. The Watch 4 runs on a Snapdragon W5 and BES2800 dual-engine setup, the same architecture that made the OnePlus Watch 3 such a strong performer in the battery department. OnePlus claims up to five days in smart mode and up to 16 days in power saver mode. The display is a 1.5-inch LTPO OLED with 466 x 466 resolution, now reaching up to 3,000 nits of peak brightness. The Watch 4 also bumps up durability with an IP69 rating added on top of the IP68 and MIL-STD-810H certification that carried over from its predecessor. What Actually Changed The design sticks with the same circular titanium case, coming in Midnight Titanium and Evergreen Titanium.…