FLYWHEEL

Brand: Sea-Gull (海鷗). Reference: 217.426. [Version: date and power reserve indicator. View other versions →]

The rotating part at 6 o'clock looks like tourbillon but it's not. Retrograde date hand at 10 o'clock, power reserve indicator at 2 o'clock.

MOVEMENT
Mechanical, self-winding. Flywheel. China Made. Caliber: Sea-Gull ST2505. Functions: Hour, Minute, Second, Date, Power Reserve Indicator (Central hour, minute and seconds hands, date hand at 10 o'clock, power reserve indicator at 2 o'clock.). Frequency: 21600 vph.

CASE
316L Stainless Steel. Diameter: 41 mm. Thickness: 14 mm. Lug width: 20 mm. Water resistance: 5 ATM. Luminescence: No lume. Dial: Black. Crystal: Sapphire Crystal. Case back: Screw-Down Notched. Transparent. Hands:Retrograde date hands. Crown:Push-Pull. Fluted Cylinder shape. Signed with the Sea-Gull watch logo.

BRACELET
Stainless Steel Links. Clasp:Butterfly Clasp. Stainless Steel clasp.