Works great, very bright. The reactive lighting takes some time to get used to. But the constant mode is great. Battery life will be an issue for my main light for night sections of a 100 mile ultra, I can not recharge it. But Petzl is coming out with a battery pack that runs on AAA batteries, so I will have the best of both world: rechargable for training and the battery pack for races.
Was this a gift?:
Bottom Line Yes, I would recommend this to a friend