I got one from Silix, and it was not cheap, but it was very good quality. The thing about it was that the crystal diameter was smaller than an original omega hesalite crystal, so when I popped out the crystal that came with it, I was able to install an original omega hesalite crystal in it. I had to sand some of the edges to get it to fit, but it is better than it being too small. Some of the ones from other vendors are different sized crystals. But if you are not planning on doing a crystal swap, then it doesn't really matter. I really like the movement in these watches. The ST1902 is a great movement at a very good price. You will not be disappointed!