Z2 (2813 high beat)

The old movement was the Z2 (2813 high beat) and the new movement is an ETA 2824-2 clone..The hands and dial feet are are direct swap..The crown was unscrewed from the old stem and screwed onto the new stem for the Eta clone.

the Sea-Gull ST2100 is an excellent choice and Hangzhou 6300 also very good. The Liaoning SL-3000 is reportly also very good. The 2824-clone that has been reported least satisfactory has been the Shanghai Z2.
Z2, the crown height is the same as the 2836, and .5 mm off on the 2824, so im not 100% sure this swap will work seing as hes using the 2824
 The following are known Chinese manufactured clones of the ETA 2824. They have all been sold to 3rd party assemblers as well as used by the house-brands of their respective manufacturers. The Sea-Gull movements have also been used as ebauche for Swiss movements. Perhaps some of the others have too.

Sea-Gull ST21 series (e.g. ST2130)
Hangzhou 6-series (e.g. 6300)
Liaoning Peacock SL3000
Shanghai Z2

This shows the evolution from the eighties-era-designed Shanghai B to the recently-developed Z2. The movement in the middle is a kind of improved Shanghai B.The newly-developed Z2 is indeed a very good movement, on a par with his Seagull counterpart.