Felsa 690 0721 Balance Complete, blued hairspring w/screw

Felsa 690 0721 Balance Complete, blued hairspring with 1 screw.
Part needs cleaning.
The Balance Complete is an authentic part from a watch movement by Felsa.

Balance perfected with Felsa's precision.

Discover the ultimate precision with the Felsa 690 0721 Balance Complete, featuring a blued hairspring with screw. As a cornerstone of the Felsa brand, this balance complete is crafted to elevate the performance of your timepiece to new heights. The blued hairspring ensures optimal accuracy, while the screw adds an extra layer of reliability. With Felsa's commitment to quality and innovation, this balance complete promises to keep your watch ticking flawlessly. Experience the harmony of precision engineering and timeless craftsmanship with Felsa, where every second counts and perfection is never compromised.