JH7158-1

JH7502

JH6203

JH8002

JH8003-2

JH8032

JH8033

JH8056

JH8058

JH8087

JH8501

A thin double-barrel exposed pendulum movement case

A calendar and weekly calendar quick-adjustment watch movement

The self-striking mechanism of a mechanical watch movement

A tourbillon movement with a calendar function

A tourbillon movement with the star function

A mechanical timekeeping switching device for the movement of watch movements

A moving-pair indicating mechanism

A start-stop mechanism for counting seconds in a mechanical watch movement

A timekeeping start-stop mechanism for a mechanical watch movement

An energy display mechanism for a mechanical watch

A cylindrical gear start-stop mechanism

A chassis structure used for mechanical watch movements

A transmission mechanism for pulling gears

A tourbillon movement with an automatic winding function

A method for detecting the stability of mechanical watch gear trains