For years Chase-Durer watches have been used by both Combat and Commercial Airline pilots. Now adding to the elaborate history of Chase-Durer Watches this watch model was used by Lord Roth to scale Mount Everest . Tech/Dimensions: SWISS Made, 27-Jewel Precision ETA 251.262 quartz movement. Chronograph: 1/10th second, 60 minutes and 12 hour elapsed time; lap time. Case in solid 316L stainless steel; screw-locked crown & screw in back; soft slide bi-directional EGB navigational slide rule bezel for calculation of speed and fuel consumption. Tachymetre. Tritium/SPO advanced illumination system on hands & indexes. Sapphire distortion free crystal. Water resistant to 100m/330 feet. Diameter 40mm, thickness 12mm; weight 4.9oz. Bracelet in solid 316L stainless steel or leather strap; deployment buckle with double lock security clasp. Serial numbered, limited edition, 5 year limited international warranty. Ref: 211.2WW6-BR07 Retail: 650.00 Available with Black Dial