Movement: Manual Winding Engine: Breguet 558.2 Functions: Hours, Minutes, Tourbillon Crystal: Sapphire - Scratch Resistant Case Diameter: 39.0 mm Caseback: Transparent Bezel Material: Platinum Bezel Function: Fixed Water Resistance: 30m / 100ft (suitable for splashing, light rain; unsuitable for swimming or diving) Additional Info: Outstanding Tourbillon