I have used it as the main light for many of my videos and interviews. Then the performance began to act a little (flickering, etc.). I contact support and they sent me another power module. It worked well for a while, but then went broke. I sent it back to China and they sent me a new device. So if customer support in the United States is your priority, this seller may not be the right one for you. However, I didn't find it tiring. You only get emails in the middle of the night. All in all a great product. Would recommend to anyone just starting out in need of a reliable key light at a super affordable price.