A very bright great quality light at a very low price. Mounting options are good and solid and the zoom capability is very useful. Be warned though as testing it indoors could cause a bad headache and make you feel sick as i feel now due its extreme brightness.
Strictly speaking one 18650 battery(even high quality ones) with an xml-T6 led wont really put out 1000 lumens. Realistically no more then 500 lumens imo. I have also seen insane Lumens claims on some similar lights on amazon which are probably not true.
But as for this light this is still plenty of brightness for the road to see ahead and be easily seen by others unless you want to blind drivers to cause accidents. one thing that could be improved on the light is the strobe and slow flashing mode. Both are really not good as one is too fast and the other too slow. something In between would have been better. But for the price im really happy and can't complain much.
BTW to exploit the full brightness of the Led i use Enerpower high quality 18650 battery. I would advise people to stay away from Cheap and unsafe china 18650 batteries
This Makes cycling feel a bit more safer.
Will be buying it again.