Case material: Gold Steel; Charge: Automatic; Conditions: Never worn Year : 2006; Presentation condition : Without documents; Price on request Gmtbroker Reference: Bezel Manufacturer: Rolex Model: GMT-Master II - 116713 Serial/Year: Z 2006 - 2007 Grade: (What's This?) II Gender: Men's Movement / Features: Automatic 3186 movement w/ date and 2nd time zone, Quickset, scratch-resistant sapphire crystal, waterproof screw-down crown, rotating bi-directional timing bezel Case: Stainless steel w/ 18k yellow gold bezel, scratch-resistant rotatable 24 hour ceramic bezel (40mm diameter), inner reflector ring engraved w/ serial number Dial: Black w/ luminescent hour makers, green 24 hour GMT hand Bracelet: Stainless steel and 18k yellow gold Oysterlock bracelet w/ easylink system Box & Papers: Rolex box, Bob's Certificate of Authenticity, and Rolex service card dated 12/2016 Comments: This pre-owned Rolex GMT comes w/ Bob's 3-day satisfaction guarantee and one year warranty Used Rolex GMT-Master II Ref 116713BKSO In the early 2000's, Rolex gave the GMT line a complete overhaul. While the core style of the original GMT Master II remains, there's no denying that the newer references are a departure from the 4 and 5-digit references from the past. The case was upgraded to the "Super Case" variety, which offers fatter lugs and a solid middle case. The case also received an anti-reflective Cyclops magnifier over the date, a Cerachrom bezel with a ceramic material insert, a maxi dial with a larger luminous display, and an upgrade to a Triplock screw-dow