When i first got my Romeo 4B it worked great. A friend of mine that hates red dots said it was the best he had seen. After a short time it started acting up, couldn't change reticles, couldn't control the brightness/dimness. Called CS and was treated great by the rep. who emailed me a return shipping label immediately. I was told 2-4 weeks turnaround. After 5 weeks I called and was told that he would check into the problem. A couple days later I got an email that said there was a warehouse problem and i would get a complete new unit. It took over 2 weeks to arrive and it doesn't work. The -button is inoperative. I can't change reticles and can't reduce the brightness. So, I called again and will have to send the unit back AGAIN. Not happy!