When the lamp goes it is quite good. Burn time could be a bit higher, but it is pretty small. What are some annoying the unnecessary spread the holes on the side of light wherever it should not go. I have covered me with some silver paint. It fits perfectly without adapter into any standard car cigarette lighter socket and also loads very quickly. Unfortunately for me, the battery is defective after 1 year use very less, so that the light duration is only very short and the contacts are corroded inside. I guess the reason is that the car is also often times long. That's why you should make sure that the battery is always charged at least every 30 days.
