Caliber EB 380

The Eberhard Caliber EB 380 is an automatic monopusher chronograph movement developed and customized by Eberhard & Co. Based on the Sellita SW510 MPC b architecture, it reflects the brand’s tradition of adapting proven Swiss chronograph bases to its own technical and aesthetic standards. Measuring 30.00 mm in diameter, the EB 380 operates at a frequency of 28,800 vibrations per hour (4 Hz) and contains 27 jewels. It offers a power reserve of approximately 62 hours, ensuring long-lasting precision and reliability. The movement integrates a monopusher chronograph mechanism, allowing start, stop, and reset functions to be controlled through a single pusher-an elegant and historically inspired configuration. Time is displayed via central hours and minutes, a small seconds subdial, and central chronograph seconds, with additional counters depending on the watch model it powers. Finishing typically includes perlage and Geneva stripes on the bridges, blued screws, and an engraved rotor customized with the Eberhard & Co. signature. The EB 380 represents a modern evolution of the brand’s chronograph expertise, combining robust automatic construction with the refined monopusher design that has long defined Eberhard’s mechanical identity.