It can be modded for diving... I have done it... but there are mods to be made:
1. you need to replace the o-rings with new and better ones who are just a bit bigger...just a bit, not too big, cause you will have problems getting the parts properly mounted together. If there are place for it, put on two...one just right in front of the threads...if possible...if not, don't. some lights have these possible feature.
2. you need to put some water resistant elastic glue sealant between the bezel and the front glass and in every joints where you don't need to open the light. you can buy this anywhere.. try a shop for building materials. try to find a brand called TECH 7...exellent stuff
you should only need to open it at the tailcap for accessing the battery.
3. you ned to put a plastic or rubber cup over the tail cap with a washer between the clicky switch and this cup to prevent the water preasure from pressing in the tail cup switch. I did it with a plastic cup from a soda bottle. Remember to set the switch in "on" position before mounting this....
4. you need to cut the spring inside the tailcap at a length that makes the spring to only gaining electrical contact with the battery only when you have screwed the tailcap almost fully in. (actually you are modding it to a twisty switch). you may also need to cut away a part of the spring in the front at the driverboard if needed so that the battery only are gaining contact when the tailcap are screwed almost fully in.
I've done it..it works... it is hard to twist while diving... I do it at the surface...and only then.. no need while diving
... it can only make the light starts leaking...
5. finally you can also put some teflon tape on the threads... for extra sealing.
If it sounds like much work, it actually isn't... just take your time and youl be fine...
I bought this one :sku.22574
at dealextreme.com
and did these mod...it has double o-rings
and is small, briiiight and cheap
