From the Grand Complication Collection this Special Edition Tourbillon watch features: •Beautifully hand engraved guilloche silver dial-cover with a porthole cut-out to view the time. With the push of a button (located in teh center of the corwn) the case cover door flips oen to allow viewing of the entire dial. •The actual dial is decorated with Coates De Geneve stripes. •1 minute Tourbillon carriage located at the 6 o'clock with integrated seconds hand •Back Movement Plate visible & beautifully hand engraved. •Roman Numeral Hour Markers. •Signature Blued "Breguet" Style hands. •Approximate 50 Hour Power Reserve.