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4. H-21 Si

Hamilton caliber H-21 Si

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Brand:	Hamilton
Reference:	H-21 Si
Base:	ETA 7750
Movement:	Automatic
Display:	Analog
Diameter:	30.00
Jewels:	25
Reserve:	60
Frequency:	28800
Date:	Date, Day
Chronograph:	Chronograph
Hands:	Hours, Minutes, Small Seconds
Additionals:	Chronometer

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:

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H77796135 Hamilton Khaki Aviation X Wind Day Date Auto Chrono / Bracelet

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H77796535 Hamilton Khaki Aviation X Wind Day Date Auto Chrono Lion Stainless Steel / Black

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H76706730 Hamilton Khaki Aviation Converter Air Zermatt Limited Edition

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H77916920 Hamilton Khaki Aviation X Wind Day Date Auto Chrono Green Camouflage

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H77906940 Hamilton Khaki Aviation X Wind Day Date Auto Chrono Blue / Canvas

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H76736730 Hamilton Khaki Aviation Converter Auto Chrono PVD / Rose Gold / Black

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H76726130 Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Black / Bracelet

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H76726530 Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Black

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H76746540 Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Blue

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H76746140 Hamilton Khaki Aviation Converter Auto Chrono Stainless Steel / Blue / Bracelet