The Hangzhou caliber 6460 (aka HZ6460) is an automatic GMT movement with a date. It has 25 jewels with a beat rate of 28,800, 4Hz. The 6460 is made in China. It is essentially an ETA 2836-2 clone.
Note: This caliber listing is still being edited, please check back for updates. In the meantime, free to start discussions in the comments below…