How about the 46-f6 movement

Caliber 46f6 is the movement of Japanese watch brand Orient Star, which has many functions such as kinetic energy display. Its skeletonized design is delicately polished and very delicate and fashionable. With an average day difference of +15 seconds to -5 seconds, the F6 movement with 50 hours of kinetic reserve is an upgraded version in the series, which has increased the length of the kinetic reserve from 40 hours to 50 hours on the basis of the original F6 movement with the functions of manual winding and stop-second counter time.

The Seagull 2824 is actually the Seagull st21 series, and why it is called the Seagull 2824 is because it is the movement that Seagull copied after the expiration of the eta patent in accordance with the eta2824 structure, which is closer to the performance of the 2824.