AuthenticSellita automatic chronograph watch movement SW500.
Sellita is a Swiss movement manufacturer and for the most part copies ETA movements. It was the main supplier for ETA, and it has all the machinery capable of reproducing the very same parts as in the original ETA branded movements. Due to the ETA attempts to regulate the provisioning of their movements, many watch manufacturers are basing their calibers on Sellita as an alternate high quality Swiss movement manufacturer.
Escapement: stone lever
Yoke winding system
Stop mechanism: Cam switching
Incabloc shock protection
Small seconds at the 9
1/8-seconds counter, 30-minutes counter, 12-hours counter
Rapid calendar advance
Complications: 12-hours counter, day: quickset date feature
D 30.0 mm, H 7.9 mm
Power reserve 44h