SF
It’s the same light as inside the Airbike unit (I know, I have both). Great bit of kit the P7 torch for very little money, but for something solely for your head when you’ve already got an Airbike Light on your bars, get a Cree R2 torch, such as this, or a pair of these perhaps instead. The R2 is the same as Hope use in their Vision 4 light (only 4 of them), they’re great as a Spot and they penetrate a VERY long way, though are quite a tight beam compared to a P7. The Q5 is similar, only about 5% less bright, but the Q5 torch I have linked to is tiny and weighs so little, you could run 2 happily on your lid and it would still be lighter than a P7!