Originally Posted by
davidad
Ten Wheels and I and other riders in our group have the Dinotte 140R's. I don't think that you can get much brighter. I know that they are brighter than a cars brake lights! The newer version has two LEDs for a little more umph.
The 140R is not that bright. OK, it's plenty bright, but it's nowhere near the brightest thing on the market. It's supposedly around 140 lumens. The Dinotte 400R is 400 lumens. The DesignShine DS-500 is 800 lumens - 5 times brighter than the 140R.
The DS-500 would be really quite dangerous to run in brightest modes at night. It lights up an entire room bright enough to read by. The top modes are only intended for daytime riding.