[kinetic]

As usual, the age old response is that...it depends on your diving:

Green Force FIV, burn time of 4 - 8 hours depending on the HID heads. When I cave, I take the 50w equiv, 8 hour burn time, never managed to actually run it down on such a dive (onve or twice a year do I get close).

Always have 2 Halcyon scouts, as back ups, on every rig I dive....every dive day or night...there's always some colour to be found at depths.

Feel free to write

kinetic