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OnePlus is reportedly in the midst of leaving key western markets entirely, including the US and UK, but has just revealed a new high-profile gadget, the OnePlus<\/a> Watch 4.<\/p>\n The full details of the watch, bar its price, have been published on the global OnePlus website. <\/p>\n Just like the OnePlus Watch 3<\/a>, announced in early 2025, the OnePlus Watch 4 has unusually long battery life for a full-blooded Wear OS smartwatch. It is rated for up to five days of use, or 16 days in its power saver mode, which dims its intelligence down to that of a fitness tracker. <\/p>\n That is possible thanks to OnePlus\u2019s use of what it calls a Dual-Engine Architecture. The Qualcomm Snapdragon W5 runs the show in smartwatch mode, while a lower-power BES2800 can manage the sensors with lesser power drain in the power saver mode. <\/p>\n The OnePlus Watch 4 is a 47mm diameter watch with a titanium outer casing, a plastic rear and Sapphire screen protection. It\u2019s a relatively high-end construction, while weight of 43g without strap matches the titanium edition of the 46mm Apple Watch Series 11<\/a>.<\/p>\n It has a 1.5-inch OLED display, just like its predecessor, has resolution of 466 x 466 pixels. And while peak brightness is rated at 3,000 nits, highs of 1,500 nits are what will actually be seen outdoors in general use under bright, direct sunlight. <\/p>\n Compared to the last-generation model, the OnePlus Watch 4 is lighter, thinner, and brighter. However, it also appears to lose the ECG feature of the OnePlus Watch 3. <\/p>\n