Hamilton caliber H-21 Si

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

Description

Variation of Hamilton's H-21 self-winding chronograph movement, here with silicon balance spring.

All watches using this caliber:

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

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

Hamilton Khaki Aviation X Wind Day Date Auto Chrono (H77796535)

H77796535 Hamilton Khaki Aviation X Wind Day Date Auto Chrono