The Sellita SW200 is identical to the ETA 2824 and even has one extra jewel (can't tell you where it's placed though). While ETA is the original, their patents have run out so anyone can copy them. Sellita has been doing so for a while and with ETA movements becoming harder to find since they are restricting sales the SW200 and SW500 (Valjoux 7750 clone) are getting more popular.