For the price paid this is a solid adapter. It does put off a substancial blue light when plugged in but that can be aimed down and or away so it is not as noticeable. Not sure for certain how many amps it is but it has issues when charging two phones that need to carge at the same time. If you only charge one device at a time this will do fine, I'd be curious as to how it does with tablets but it is a definite no for two phones. I bought two as they are so cheap and have two cigarette lights in vehicle so that solves my problem. I have also ordered a 2 amp adapter as I am thinking that this one is only around 1 amp but I have not tested that.