Astronomia Revolution Black Gold Color:Black Gold its 40 mm Oyster case its 40 mm Oyster case is enhanced by a diamond set bezel and a rich chocolate dial that adds warmth and sophistication The Tissot PRX Powermatic 80 combines sleek 1970s inspired design with modern Swiss engineering Its vertical movement spins at the record speed of one minute per rotation 680 Movement Caliber: JCAM48B Winding: Hand Wound Components: 434 Power Reserve: 30 Hours Frequency: 21'600 vph (3Hz) Functions: Vertical Rotating Central Platform: Rotation in 60 Seconds Flying Double Axis Tourbillon 1st Axis: Rotation in 60 Seconds 2nd Axis: Rotation in 15 Seconds Constant Force Device with 1 6th of a Second Loading Frequency Off centered Hour and Minute Dial with Differential Rotating Seconds Hand: Counterclockwise Rotation in 15 Seconds Case Diameter: 47 mm Height: 27 mm Material: 18K Black Gold and Single block Sapphire Caseband Crystal: Curved Anti Reflective Sapphire Crystal Caseback: 18K Black Gold Water Resistance: 30m (3atm) Dial Base: Black Spinel Subdial: Skeleton