The movement is exactly as described, runs very well out of the box, and behaves as expected in relation to the other similar movements. Had to do some disassembly and online documentation for this "family" was accurate. Note that no extra stems are provided, make sure to buy them.
I received the Sea-Gull ST2130 movement and, after testing it, installed it immediately. The watch runs perfectly and I like it very much because of its simple design.
Nice movement. Well regulated from the factory and runs within swiss chronometer parameters. However, there is absolutely no branding, text or any info engraved in the movement. Will buy again for my DIY watch build.