Bright, but spread is too wide for safe road bike use
This light meets its specified lumens with similar brightness to car headlamps, which is necessary for road bike use. With the beam aimed properly on the road and slightly to the left, this light is still blinding to other drivers because the spread of the beam is much too wide. It is not well focused for a proper bike light or any moving vehicle headlamp for that matter.
It may work well as a day running light, or for night MTB/trail use. As a MTB night trail light, carry extra fully charged batteries and the tool to change them with, since it will last 1.5 hours on high. For quality and brightness, I rate it 5. it is bright and well made. Since it does not provide for making a quick battery change, trail use rating is reduced to 3, and an unacceptable 0 for road use. Overall, for cycling, I rate it 2.
If you wanted it for a high quality hand held camping flashlight, or hand held search and rescue light, I would rate it a "screaming" 5, being so powerfully bright for its compact size.
Verified purchase: YesCondition: New