ST1902 Manual Winding Movement 6 Hands Mechanical Chronograph Watch Movement For Seagull ST1902 Movement Repair Replacement. ST1902 Movement Manual Winding Mechanical Chronograph Movement Clock Movement Men’s Watches Man Watch Repair Parts. Product Type: For ST1902 Movement. Movement Calibre: about 31.3 mm. Movement height: about 6.25 mm. Beats Per Hour: 21600. Crown Position : Crown at 3 o’clock. Function: 6 hands movement, middle hour, minute and second hand, 3 o’clock dial chronograph minute hand, 6 o’clock dial hour hand, 9 o’clock dial small second hand. Movement parts are precision parts, easy to damage, Need to be replaced by professionals. If you don’t know how to replace, you can find a professional watchmaker to replace.