The Double Tourbillon 30° Technique is an open worked version of the first watch Greubel Forsey ever launched; the Double Tourbillion 30°. Hour indices on a sapphire disc appear to float inside the case and every aspect of the movement seems to jump out at you. Large but comfortable on the wrist, this watch is available in 18 karat white gold, 18 karat red gold, or platinum. Brand: Greubel Forsey Model: Double Tourbillon 30° Technique Reference Number: Double Tourbillon 30° Technique Movement: Manual Winding Case Material: Red Gold, White Gold, or Platinum Case Size: 47.5mm Dial: Silver or Black Bracelet/Strap: Leather Gender: Men's Watch/Unisex Warranty: Manufacturer's Warranty Features: Tourbillon Small Seconds Power Reserve Shop other beautiful pieces in our Greubel Forsey collection For inquiries on the piece please contact: boutique@shsilver.com