Rolex GMT-Master II "Blaken" edition. Here are the detailed specifications:
Case:
 * Material: Stainless steel
 * Diameter: 40 mm
 * Thickness: 12.8 mm
 * Water resistance: 100 meters (330 feet)
Movement:
 * Caliber: 3285
 * Type: Self-winding mechanical
 * Functions: Hours, minutes, seconds, date, GMT
 * Power reserve: Approximately 70 hours
Dial:
 * Color: Black
 * Indices: Luminescent hour markers and hands
Bezel:
 * Material: Cerachrom insert
 * Color: Blue and black
 * Function: 24-hour GMT scale
Bracelet:
 * Material: Jubilee bracelet with Easylink clasp
 * Color: Stainless steel
Other features:
 * Superlative Chronometer certified by COSC
 * Cyclops lens over date
 * Screw-down crown and caseback
Additional notes:
 * The watch in the image appears to be a Rolex GMT-Master II "Blaken" edition, which features a blacked-out case and bezel.
 * The "Blaken" edition is a limited-edition