The Omega 3861 is based on the Lemania 1873 with upgrades including an anti-magnetic hairspring and co-axial escapement. It is manufactured by Omega and only used by Omega, though it was not developed from scratch by Omega engineers.
TECHNICAL SPECIFICATIONS
Movement Type
Manual Winding
Jewel Count
27 jewels
Frequency
21,600 vph (3 Hz)
Diameter
27mm
Display Type
Analog
COMPLICATIONS
FEATURES
Watches with this movement
OMEGA
Speedmaster Moonwatch Professional
310.20.42.50.02.001
OMEGA
Speedmaster Moonwatch Professional
310.20.42.50.99.001
OMEGA
Speedmaster Moonwatch Professional
310.23.42.50.02.001
OMEGA
Speedmaster Moonwatch Professional
310.23.42.50.99.001
OMEGA
Speedmaster First OMEGA in Space
310.30.40.50.06.001
OMEGA
Speedmaster Moonwatch Professional
310.30.42.50.01.001
OMEGA
Speedmaster Moonwatch Professional
310.30.42.50.01.002
OMEGA
Speedmaster Moonwatch Professional
310.30.42.50.01.004
OMEGA
Speedmaster Moonwatch Professional
310.30.42.50.04.001
OMEGA
Speedmaster First OMEGA in Space
310.32.40.50.06.001
OMEGA
Speedmaster First OMEGA in Space
310.32.40.50.06.002
OMEGA
Speedmaster Moonwatch Professional
310.32.42.50.01.001
OMEGA
Speedmaster Moonwatch Professional
310.32.42.50.01.002
OMEGA
Speedmaster Anniversary Series (Silver Snoopy Award)
310.32.42.50.02.001
OMEGA
Speedmaster Moonwatch Professional
310.32.42.50.04.001
OMEGA
Speedmaster Moonwatch Professional
310.32.42.50.04.002
OMEGA
Speedmaster Moonwatch Professional
310.55.42.50.02.001
OMEGA
Speedmaster Moonwatch Professional
310.55.42.50.13.001
OMEGA
Speedmaster Moonwatch Professional
310.60.42.50.01.001
OMEGA
Speedmaster Moonwatch Professional
310.60.42.50.01.002
OMEGA
Speedmaster Moonwatch Professional
310.60.42.50.02.001
OMEGA
Speedmaster Moonwatch Professional
310.60.42.50.10.001
OMEGA
Speedmaster Moonwatch Professional
310.60.42.50.10.002
OMEGA
Speedmaster Moonwatch Professional
310.60.42.50.99.002
OMEGA
Speedmaster Moonwatch Professional
310.62.42.50.99.001
OMEGA
Speedmaster Moonwatch Professional
310.63.42.50.01.001
OMEGA
Speedmaster Moonwatch Professional
310.63.42.50.02.001
OMEGA
Speedmaster Moonwatch Professional
310.63.42.50.10.001
More OMEGA movements
QUICK FACTS
BRAND
TYPE
Manual WindingSTATUS
In ProductionMANUFACTURE
In-houseLAUNCH YEAR
2021BASED ON
Lemania Lemania 1873CALIBER FAMILY
18xx/38xxCOUNTRY
SwitzerlandALSO KNOWN AS
FOR WATCH DEALERS
Sell watches powered by the 3861?
Inventory, Chrono24 & eBay sync, VAT invoicing — dealer tools built on this database.