Breitling Navitimer Montbrillant Datora

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The Breitling Montbrillant Datora (Ref. A2133012) is a highly complicated pilot's chronograph inspired by 1940s bestsellers. It is distinguished by its triple calendar display and the iconic circular slide rule integrated into its bidirectional rotating bezel. Case: 43mm stainless steel with a high-polish finish and a thickness of 14.1mm. Movement: Breitling Caliber 21 (based on the ETA Valjoux 7751), which is a COSC-certified automatic chronometer with a 42-hour power reserve. Dial Options: Available in colors such as silver, black, brown, and bronze, featuring luminous hands and stick markers. Crystal: Cambered sapphire with anti-glare treatment on both sides. Water Resistance: 30 meters (3 ATM), making it resistant to minor splashes but not suitable for swimming. Complex Complications: Triple Calendar: Displays the day and month through side-by-side windows below the 12 o'clock position, while a central hand with a red half-moon tip indicates the date around the outer dial. Chronograph: Measures time with 1/5th second accuracy, including 30-minute and 12-hour registers. 24-Hour Indicator: Coaxial with the small seconds at 9 o'clock, this sub-dial indicates AM/PM or "military time". Aviation Slide Rule: Allows pilots to perform airborne calculations like fuel consumption, climb times, and unit conversions.