MB&F caliber HM4
MB&F · Movement

MB&F caliber HM4

Ref. HM4

The MB&F caliber HM4 is a handwound movement with a 72-hour power reserve, beats at 21,600 vph, and carries 50 jewels.

Three-dimensional horological engine developed 100% by MB&F Manual winding with two mainspring barrels in parallel Power reserve: 72 hours Balance frequency: 21,600bph/3Hz Number of components: 311 Number of jewels: 50

Type
Handwound
Display
Analog
Power reserve
72 h
Frequency
21600 vph
Jewels
50
Complications
Hours, Minutes, Power Reserve Indicator

Used in

7 models