Oppo installs a 1.5-inch LTPO OLED display too that resolves at 466 x 466 pixels with a 60 Hz refresh rate. While the company mentions 3,000 nits peak brightness, this is only true in direct sunlight when a sports mode is running. Normally, the Watch X3 can only be manually adjusted up to 600 nits.
Meanwhile, the included 646 mAh battery is said to last up to 5 days in smartwatch mode. The Snapdragon W5 chipset should help the Watch X3 run to 16 days of battery life in power-saving mode, though. The Watch X3 also promises a suite of health monitoring sensors, including ones dedicated to taking an ECG and checking skin temperature. Oppo charges CNY 2,799 (~$405) for the Watch X3 in a choice of black, orange and titanium finishes.