Hamilton caliber H-21 Si
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H-21 Si description
Variation of Hamilton's H-21 self-winding chronograph movement, here with silicon balance spring.
All watches using the Hamilton H-21 Si movement:
![Hamilton Khaki Aviation X Wind Day Date Auto Chrono / Bracelet (H77796135)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h77796135-53.jpg)
H77796135
Hamilton Khaki Aviation X Wind Day Date Auto Chrono / Bracelet
![Hamilton Khaki Aviation X Wind Day Date Auto Chrono Lion Stainless Steel / Black (H77796535)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h77796535-ae.jpg)
H77796535
Hamilton Khaki Aviation X Wind Day Date Auto Chrono Lion Stainless Steel / Black
![Hamilton Khaki Aviation Converter Air Zermatt Limited Edition (H76706730)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h76706730-c.jpg)
H76706730
Hamilton Khaki Aviation Converter Air Zermatt Limited Edition
![Hamilton Khaki Aviation X Wind Day Date Auto Chrono Green Camouflage (H77916920)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h77916920-1.jpg)
H77916920
Hamilton Khaki Aviation X Wind Day Date Auto Chrono Green Camouflage
![Hamilton Khaki Aviation X Wind Day Date Auto Chrono Blue / Canvas (H77906940)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h77906940-97.jpg)
H77906940
Hamilton Khaki Aviation X Wind Day Date Auto Chrono Blue / Canvas
![Hamilton Khaki Aviation Converter Auto Chrono PVD / Rose Gold / Black (H76736730)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h76736730-c5.jpg)
H76736730
Hamilton Khaki Aviation Converter Auto Chrono PVD / Rose Gold / Black
![Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Black / Bracelet (H76726130)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h76726130-6d.jpg)
H76726130
Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Black / Bracelet
![Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Black (H76726530)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h76726530-20.jpg)
H76726530
Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Black
![Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Blue (H76746540)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h76746540-38.jpg)
H76746540
Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Blue
![Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Blue / Bracelet (H76746140)](https://cdn.watchbase.com/watch/md/hamilton/khaki-aviation/h76746140-66.jpg)
H76746140
Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Blue / Bracelet