Anyone recognize this movement?

[cougaree]

I got this watch from a fellow member. The second hand jumps (worse than a quartz movement). Sometimes in 1 second increment and other times in 2 second increment. Can anybody tell me what's wrong with it? What movement does it have? The watch appears to be a 47mm watch and I'm also wondering if I can find a sapphire crystal for it. Will an A7750 movement fit into this watch? Other than the jumping second hand, the watch keeps decent time and I do like the design of it. The movement is bit loose, so when I pull the crown out, it looks like the dial moves a bit.

Thank you for your help!

[Corp.]

This is a chinese Seagull Movement - not per se a bad movement....

And it is not correctly mounted - the movement should be hold by srewes in the spacer ring (see 2nd photo)

[cougaree]

Shoot. Now I see it. They never came with the watch.

Thanks for noticing!