Review on Bike Light USB Rechargeable 4000 Lumen - 🚲 Powerful Front and Back Bicycle Lights for Road Cycling Safety by Non Martin

The light is very bright. If it's not bright enough then it's not intended for airplanes. Blindingly bright. However, the mountain is only fair. Inside the ring is a screw that requires a spacer that prevents the light from fitting to thicker handlebars or parts than normal. I have 5 bikes and none of them fit. No problem for me, but maybe for you. It takes time to charge compared to small flashlights - twice as long. The rear light is nothing special in terms of brightness. The taillight is ok at night, not so much during the day. Although the front light is impressive.