These have had little use, I went away on a 2 week shoot and used them roughly 20% of the time whilst there. On a pick up shoot more recently upon switching on, one of the bulbs appeared to blow. We then tried to change it but to no avail. After taken to a reliable electrician, we were told they were ill protected from surges and other varying issues, and in that instance, the circuit board inside had actually blown up. We got very lucky that no one was hurt. He informed us the circuit boards were the cheapest that could be found and that the wires inside were exposed and dangerous.
I strongly avise, after finding this out, you do not buy this product or if you do you have them reinforced and protected by a reliable electrician. Contacted seller but still not heard back so feel the need to leave this message.
Other than the danger aspect, the lights are okay. Semi - reliable. The dimmers either on't work or stop working after using them once or twice. The bulbs are (as to be expected) cheap and unreliable and will no doubt need changing quickly. The dimmers, other than the danger, are the real low point of this as it seems like such a great feature but they're cheap and shoddily made so ineffective. Recommend putting your money towards something safer and more airtight unless you get them modified but a trusted individual.