The Sellita SW200-1 is the main competitor to ETA’s 2824-2 workhorse. It has been updated from SW200 to SW200-1.
Many reputable watch companies are using this movement as an alternative to the ETA mechanism due to it being more economical and readily available.
You may have seen this movement written as the SW-200 but according to Sellita, the correct way to spell this caliber number is SW200 without a hyphen.
The photos in this post are of a Sellita caliber SW200-1 found in a Pharos Sentinel watch.