| Imported post <font color='#000080'>Hi
The Halcyon site has the dimensions if you follow the links to the manual which is a pdf.
The Helios 4.5 is 2.5" OD and 9.5" long
It is a very small canister and so cannot really be used as part of your weighting system.
I have a Helios 9 which is 2.75" OD and 10.5" long
Most of the other DIR divers I dive with use the Proteus Lights which are Nicad and are much heavier, saving up to 3kg on your weightbelt. They have shorter burn times though. With the 10W HID I get 8 hours burntime!
Hope that helps
Andy |