Harwood Self-Winding Watch Co / Harwood Bumper
Harwood Self-Winding Watch Co Harwood Bumper
コレクションプロフィール
Distinguished by its signature 'bumper' rotor mechanism that oscillated 180 degrees rather than rotating fully, providing power through natural arm motion without manual winding.
Harwood Self-Winding Watch Coのその他のモデル
- Harwood Automatic — The world's first commercially produced automatic wristwatch, patented in 1924 and manufactured from 1928, featuring a revolutionary bumper winding system activated by wrist movement.