Pre-Owned Greubel Forsey Double Tourbillon 30 Degree Technique (DBLTRB30BLK) manual wind watch, features a 47.5mm black ADLC coated titanium case surrounding a skeleton dial on a black rubber strap with a black ADLC coated titanium deployant buckle. Functions include hours, minutes, seconds, power reserve indicator and tourbillon. This watch has been serviced and comes with the original box and papers. Time remaining on the Manufacturer's service warranty!