H-21 Si

AUTOMATIC • Analog • Chronograph: Chronograph Hands: Hours, Minutes, Small Seconds Chronometer

Jewels
25
Reserve
60 h
Frequency
28,800 vph (4.0 Hz)
Diameter
30 mm
Height
-

About this caliber

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

Technical details

Movement
AUTOMATIC
Display
Analog
Jewels
25
Power reserve
60 hours
Frequency
28,800 vph (4.0 Hz)
Hands
Chronograph: Chronograph Hands: Hours, Minutes, Small Seconds Chronometer
Diameter
30 mm
Height
-
Parts
-