MERKUR Chronograph Mechanical Big Eye Metal GreyThe Seagull TY29 movement in every chronograph We have all conducted strict MTS adjusted, although cumbersome and complicated. But this is the original intention of our MERKUR watchmaking Design our own high end watches with a rigorous attitude 1. About the Sea Gull ST1901 TY2901 Manual Winding Mechanical Chronograph Movement: The Sea Gull ST1901 is a 21 jewel column wheel chronograph manual winding movement. It's operating at 3 Hz (21,600 vph), has a