Product overview

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A detailed, evidence-led view of the product—not a generic sales summary.

A true revival of a 70s prototype, the Autochron Blue Petroleum is a vintage-inspired automatic Autochron with a modern twist. Its matte petroleum blue dial features a granulated texture , creating a striking visual effect alongside the embossed black sub-dials. The dial is enhanced with Super-Luminova-coated baton indices and hands , ensuring excellent readability. Powered by the Valjoux 7750-ETA automatic movement , this timepiece delivers 42 hours of power reserve and features a tachymeter scale for speed measurement. The 38mm stainless steel case is topped with a domed sapphire crystal and features a bidirectional fluted rotating bezel with a yellow dot accent at 12 o’clock. Water-resistant up to 200 meters (20 ATM) , the Autochron Blue Petroleum is available with Tropic rubber, leather, and steel straps , offering versatility for any occasion. At the heart of this watch beats a Valjoux-7750-ETA automatic movement, offering a 42-hour power reserve and complete functions: central hours, minutes, seconds, and date. The 38mm stainless steel 316L case, with a thickness of 12.7mm (without the crystal), is protected by a domed sapphire crystal with an anti-reflective coating, ensuring both durability and clarity. The Chronosport features a stunning bidirectional fluted rotating bezel, without clicks, just like the original, made of aluminum and adorned with a yellow dot at 12 o’clock for a pop of color and elegance. It is equipped with a tachymeter scale to measure speed over a known distance, a practical and aesthetic function particularly appreciated by racing drivers. Finally, it is available with a variety of straps: Tropic rubber, leather, and steel. Verified details include bracelet material of Stainless Steel, brand collections of Autochron, dial colour of Blue, diameter of 38mm, guarantee of Nivada Grenchen 2 Year Guarantee and movement of Automatic. Available colours: Blue.