Review on Weihao Bike Light - Waterproof Bicycle Headlight with Super Bright 10500 Lumen, 7 LED Bike Headlight, 9600mAh Rechargeable Battery Pack for All Bike Cycling, Camping, Outdoor - Headlamp Flashlight Included by Jonathan Davenport

Have only used it twice so far but the light seems good, no more than 10,000 lumens but probably in the 1200 range. Lights up green. The only thing that bothers me is the handlebar mount, it might be fine for highway riding, but on the track you have to keep readjusting it to make it shine where you want it. Overall for $30 I won't complain, very happy with the light in this price range.