As an industry expert, trust these High Quality Swiss Made Mainsprings for OMEGA 860, 861, 863, 865, 866, 910, 911, 920, 930, 1861, 1863 calibers for efficient and professional watch repair. Crafted in Switzerland, these replacements are specifically designed for OMEGA watches, ensuring optimal performance. Keep your timepiece running smoothly with these expertly crafted mainsprings.
Compatible with the following:
OMGEA: 860, 861, 863, 865, 866, 910, 911, 920, 930, 1861, 1863
Best Fit: 770/142
***Time Connection II Inc. is independent of and not affiliated with or sponsored by OMEGA. All warranty does not apply to non-genuine parts supplied by Time Connection II Inc.***


