Chronograph Handwind Watch Movement For Seagull ST1901 TY2901 Replacement Repair. Features: Chronograph hand at 3 o’clock, second hand at 9 o’clock Centre’ long hands=60 second for chronograph And other 2 hands is the time on the movement Mechanical 2 registered chronograph movement, power reserve about 42 hours Specifications: Model: ST-1901 (TY2901) Outer Diameter: 31.30 mm Height: 6.25mm (dial plate +0.4mm) Mounting height: 0.5mm Stem height: 1.8mm Jewels: 22 Frequency: 21,600bph Power reserve: Approx. Due to the manual measurement, there might be some error. Package include: 1 x Watch Movement. We recommend that you try again after 3-4 days. Return items should include the original packaging and all accessories.