I also bought through Amazon - felt safer than ordering through a unknown Chinese website. The light I bought claims a 1300 lumen output. While probably not 1300 lumens it's crazy bright on a full battery. The light does dim slightly as the battery discharges and it will discharge even while off if you leave the battery plugged into the light. The light itself works fantastic and has a good bright beam - not too wide, but not a spot either. The charger works well too. It has around a 3 hour run time on high.

I've owned it through December and am very pleased with it's performance and value. If they skimped anywhere, it may be on the battery. No problems yet though!