I don't have it, but typically lumen claims like this are LED lumens, meaning for a very brief period at turn on, the light is theoretically capable of producing 1200 lumens at the LED. However, there is sometimes a quick drop in output with-in the first few minutes, and after taking into consideration reflector loss and front glass cover loss, you're probably looking at anywhere from 20-40% less than the manufacturer's claim, so maybe a sustained OTF (out the front) of 800- 900 lumens, which still isn't bad.
My main problem with this kind of light can be demonstrated by reading the first review on the left side, where he proudly states that it's so bright that on his ride home people coming the other direction had to cover their eyes. Yes, he was blinding them, that's how bright it is. Yippeee, a light so bright it can blind everybody who's coming the other direction.
Of course he says that now he points it down every time somebody approaches, but that seems like it might get old, and after a while he'd just forget about that and not worry about blinding people.
Anyway, my point is, anybody can get a cheap super bight light and put it on their bike, and if you're riding out in the boonies, then great, but for in town riding, that is completely rude, not to mention unsafe.
There are alternatives, lights specifically manufactured for bicycles that have shaped beams which place the light on the roadway, not up in people's eyes. Yes, they are typically a bit more expensive, but they actually work much better, giving a nice even beam that is easy on the eyes for you AND those coming towards you.
Check out the Philips Saferide, or the Busch & Muller Ixon IQ Premium to see what I'm talking about.
