ROGER DUBUIS Excalibur Spider hollow flying Tourbillon wristwatch of ROGER DUBUIS king series, 46mm full hollow loose parts assembled seamless connection case, original vertical double screw connection between tape and case (firm and stable), iconic star shaped design, Kyle shaped Tourbillon frame, and RD505SQ fully automatic chain up movement, tape sticking design, color splash and activity at the same time, Roger Dube - Geneva Seal brand, the guarantee of exquisite watchmaking technology.