Rolex cal. 2030 Hair spring problem

[Matej]

Hello. I have rolex 2030 with hair spring missing. Do you thing its possible to repair or it need new balance complete? Thank you

[Delgetti]

Hello,

Rolex doesn't list single hairsprings, only timed balance complete. You need part Rolex 2030-4432.

[Nucejoe]

You would need a compatible hairspring to vibrate the with this wheel, it would work even if not a dedicated hairspring,  however, Building a complete balance that can deliver the split second accuracy expected out of Rolex is however a job for competent watchmaker, who would certainly go with genuine Rolex parts.