Huanghe is the Yellow River, around which Chinese civilisation began millennia ago. The watch factory in Zhengzhou chose to name its major brand after this important geographical feature, as the city is situated on its south bank. Most HuangHe watches are run by a 16 jewel upgrade of the SN2 movement, but in spite of what the dial states, this example has a 9 jewel movement inside. The power reserve of the SN2 is usually more than 50 hours. This one's is closer to 60.