I am just about to import a load of HID dive lights, almost identical
to the Halcyon range, They are all focussable and come with NiMh
battery packs. Head wattage either 10W or 21W and the battery packs
come in 4.5Ah, 9Ah and 13.5Ah flavours. More info and pricing can be
found on a post on YD here:
http://www.yorkshire-divers.co.uk/forums/showthread.php?t=16552