Just bought one of these and it seems pretty good.
It takes 3 AAA batteries (comes with Energisers) and claims they'll last 4 hours at full power or 25 hours on "eco mode".
Seems quite well put together, though I noticed that the 'o' ring is damaged so I'll try not to drop it into a puddle until I've replaced it.
Beam looks nice and even and can be focused.
On/off button in the base is recessed so hard to switch on accidentally.
Heavy: 200g with batteries.
Comes with a pouch to fix to your belt, but it doesn't close securely enough to be trusted.
I'll take it down Cwmorthin tomorrow and see how it behaves.
"The true crimefighter always carries everything he needs in his utility belt, Robin"