Large AMOLED screen, stainless steel body, eSIM, heart rate and SpO2 sensors, ECG recording, up to 16 days of battery life. Oppo Watch 2 ECG smartwatch goes on sale in China By Derek Black On Oct 24, 2021 Share Get real time updates directly on you device, subscribe now. Subscribe Oppo has announced the start of pre-sales of the Oppo Watch 2 ECG smartwatch in China. The official premiere of the device took place on September 16, now you can buy a new product on pre-order terms in China for the equivalent of $ 360, and retail sales will start...