Breitling Navitimer Ref. 806 Big Sub-Dial, Cal. Venus 178, 1970

Description

Breitling Navitimer Twin Jet Ref. 806 “Big Sub-Dial” – Caliber Venus 178 (1970) A true icon of aviation horology, this Breitling Navitimer Ref. 806 represents one of the most celebrated chronographs ever produced. This particular example, bearing the serial number 1’352’xxx, dates to 1970, and is powered by the legendary manual-wind Venus 178 column-wheel chronograph movement. Condition and Details This Navitimer features the highly sought-after “big sub-dial” configuration, introduced in the late 1960s. The enlarged sub-registers provide improved legibility while enhancing the visual balance of the dial — a subtle but significant evolution in the model’s long lineage. The black dial  complemented by white contrasting big subdials, original syringe hands. The stainless steel case remains in excellent condition, preserving its original proportions and sharp lugs. The beaded bezel and fully functional rotating slide rule — essential tools for in-flight navigation — are also in fine working order. This example comes with its leather bracelet and original Breitling Twin Jet clasp, a rare and desirable detail that enhances its collectability. History of the Navitimer 806 Launched in 1952, the Breitling Navitimer was designed in collaboration with the Aircraft Owners and Pilots Association (AOPA) to serve as a professional instrument for aviators. The model’s signature circular slide rule bezel enabled pilots to perform vital calculations such as speed, distance, and fuel consumption directly from the wrist — an innovation that quickly made the Navitimer an indispensable cockpit tool. The Reference 806 defined the Navitimer’s identity for decades. Through the 1960s and early 1970s, it underwent subtle refinements in case, dial, and hand design, culminating in variants like this “big sub-dial” version, which collectors today prize for its balanced aesthetics and improved legibility. Movement Caliber: Venus 178, serviced Type: Manual-wind column-wheel chronograph Jewels: 17 Functions: Hours, minutes, small seconds, chronograph with 30-minute and 12-hour totalizers Dimensions Case Diameter: 41mm Lug Width: 22mm Crystal: Acrylic Case Material: Stainless Steel Summary This 1970 Breitling Navitimer Ref. 806 “Big Sub-Dial” represents one of the most refined and balanced evolutions of the classic pilot’s chronograph. With its original bracelet and clasp, exceptional vintage condition, and the revered Venus 178 movement, it stands as a perfect blend of functionality, heritage, and timeless design — a true icon for both collectors and connoisseurs of mechanical watchmaking.

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