Self-winding (Automatic)
自動巻き／ジドウマキ
自动上弦（自动）
Self-winding (Automatic)
Remontage automatique
Glossary
Thematic
Energy, Technic
Describes a mechanism that winds the mainspring by using the movement of the arm to cause a rotor to rotate and which, via specific gears, winds the mainspring.