I haven't long bought a tracer 150 led. Went for the rechargeable as wires were pissing me off. A lot of people mentioned the colour of the light when I asked around about them. But tbh I find the led better than a halogen, I'm colour blind and I seem tovbe able to spot a lot more with my lamp than my with my mates 140. The battery in mine is a 3.7v lithium ion that claims to last 2.5 hours constant run time. I have been out with it a few times now and have yet to run the battery flat. The beam is nice and tight,unfortunately it isn't adjustable on this lamp, but I like It as it is. One thing