The 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 running second dial at the 9 o’clock position, a 30 minute counter sub-dial at 3 o’clock, and a sweep second counter mounted centrally along with the timekeeping minute and hour hands.

The chronograph functions are controlled through two buttons, one (at 2 o’clock) for starting and stopping the chronograph, one (at 4 o’clock) for resetting the second and minute counters. The ST1901 has many family members, a precise and strong running chronograph watch movement.
 

2. Specifications:

Model: Sea-Gull ST1901

Ruby Jewels: 21

Movement Calibre: 31.3mm，thickness: 5.85mm. Frequency: 3 Hz (21.600 vph)

Functions: hours, minutes, seconds, calendar, summing up stopwatch

Technical Specs:

Case Diameter (excluding crown): 38mm

Case Thickness: 14mm, Lug-To-Lug: 46.7mm, Lug Width: 18mm

Case Material: 316L Stainless steel

Movement: Seagull TY29

Frequency: 21,600 vibrations per hour

Water Resistance: 30 meters or 3 ATM