Does not function - SIG SAUER Romeo4B 1X20 Low/Co .5MOA

I have bought two of these Sig Sauer Circle dot sights and both were defective right out of the box. The first one did not turn on the center dot, just the outer ring. I called Sig and they assured me that was very unusual and the sights worked fine. I shipped it back to Optics Planet and exchanged it for another of the exact same model - the Romeo 4B. The new one just arrived and it does not work at all, nothing turns on. No dot, no circle, no reticle at all. I read the instructions carefully and tried two different batteries. I called Sig and got the same story. I am shipping this one back to Optics Planet for a refund. Very disappointed in the lack of quality control from Sig. Neither one of these sights should have left the factory.