From the King Power Maker......Ayton Senna  2009 Special Limited Edition MOVEMENT: Swiss 7750 Valjoux Working Chronograph Movement, Engraved Decorated Insignia Rotor, 28800bph
CASE DIAMETER: 44.5mm
THICKNESS: 16mm
DIAL COLOR: Senna Signature Special Edition All Black Dial and Subdials, Darken Indexes,  Blacken Stick/Numeral Hour Markers
CASE MATERIAL:  Full Black Ceramic Case, Steel Inner Case, Brushed Ceramic Bezel, Full Ceramic and Steel Composite Caseset 
BRACELET: Rubber strap with PVD Insignia Deployant Clasp
FRONT GLASS: Sapphire crystal, Double sided AR coated Swiss Standards
BACK GLASS: Display Ceramic caseback with detail Engraving case rims and Senna Special Edition Engraving on Caseback
BEZEL: Brushed Ceramic Bezel
HACK MOVEMENT: Yes
CLASP TYPE: Deployant Folding Clasp
DATE INDICATOR: At 4:30 position (Black Date Wheel)
Fully Functional Chronograph
Power Reserve Indicator : Faux Fixed Needle at 6.00
Top pusher starts/stops chronograph
Bottom pusher resets chronograph