In reply to AlisonSmiles:
i used to have the gamma as my light in my pack for late finishes etc.
that is until i was on kinder last winter. set off from the car at 6pm to climb the downfall. so far along we deceided to check the map so out comes the red light on the gamma as it was a decent moon.
we get to the downfall and i try to turn on the white light to see to gear up and climb with (the mist had set in a bit now) no light, tried the green light same problem, tried the red light and it worked. then tried the main beam white lights and no light.
climbing ice in a red light is not great!
i've now got the petzl tikka 2. its a good light and will last all night.