Family: HM44 jewels45h power reserve18,000 vph (5 Hz)
HM9 is MB&F's manual-winding in-house movement featuring two independent balance wheels connected by a planetary differential, a configuration inspired by jet engine pod design. The caliber comprises 301 components with 44 jewels and beats at 2.5Hz (18,000 bph), delivering a 45-hour power reserve. Hours and minutes display on a vertical dial. Introduced in 2018, HM9 remains in production with Road Edition, Air Edition, and transparent SV variants.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Jewel Count
44 jewels
Power Reserve
45h
Frequency
18,000 vph (5 Hz)
Display Type
Analog
COMPLICATIONS
Minute Repeater
FEATURES
Sweep Seconds
QUICK FACTS
BRAND
TYPE
Manual WindingSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
2018CALIBER FAMILY
HMALSO KNOWN AS
horological machine no. 9flow