Successor to caliber 861, the 1861 is the current workhorse of the Speedmaster Professional Moonwatch with Hesalite crystal. Introduced in 1996 with improved finishing over the 861. Based on Lemania 1873, featuring cam-actuated chronograph mechanism. NASA flight-qualified movement. Being gradually phased out in favor of the METAS-certified 3861.
Movement Type
Manual Wind
Jewel Count
18 jewels
Power Reserve
48h
Frequency
21,600 vph (6 Hz)
Diameter
27mm
Height
7.9mm
Display Type
Analog
Shock Protection
Incabloc
BRAND
OMEGATYPE
Manual WindSTATUS
In ProductionMANUFACTURE
ÉbaucheLAUNCH YEAR
1996CALIBER FAMILY
86x/186xCOUNTRY
SwitzerlandALSO KNOWN AS
