SHANGHAI watch VAST series - Tourbillon Shanghai (上海). Reference: 22AT-T-F03E-GYBL-RS. [Version: mother-of-pearl dial]. MOVEMENT Mechanical, manual-winding. Tourbillon. China Made. Caliber: Shanghai F3E. Functions: Hour, minute, date, power reserve indicator (Central hour and minute hands, retrograde date hand at 7 o'clock, power reserve indicator at 3 o'clock.). Jewels: 31. Frequency: 28800 vph. Power reserve: Around 40 hours. CASE 316L stainless steel. Diameter: 42 mm. Thickness: 13.6 mm. Lug width: 22 mm. Lug to lug: 49 mm. Water resistance: 50 meters. Luminescence: No lume. Bezel: 18K rose gold bezel insert. Dial: Mother of pearl. Diamond indices. Crystal: Sapphire crystal. Domed. Has anti-reflective coating. Case back: Screw-down notched. Transparent. Sapphire crystal case back. Crown: Push-pull. STRAP Black leather. Fit for case lug width: 22 mm. Clasp: Butterfly clasp. Stainless steel clasp.