Ssshhh, don't tell him, but, resistor modding, or swapping wires, or potting, or ... 
One switch you mean
Yes, this light has just one switch, but two switch's is not a problem. I'd go with Narsil/Attiny85/LDO/FET, maybe 1 7135, maybe a bank, maybe both - depending on the I/O pin availability.
Hi Tom
The engineer is abit concerned that non-flashoholic users will dissamble the light out of curiosity to cause some damage.
In fact the retaining ring part has not been machined. Will discuss it again with our engineers tomorrow.
I vote also for retaining ring on the driver .
thanks!
+1
Thank you too 
If you use a snap ring
With very small holes Tom and the likes can still open it up but people not in the know won’t do it.
Not a good idea for a solid contact .
Just my thought
Threaded ring would be preferred, but if you want, don't leave any guide holes - we can drill them, not a problem...
looking forward for a review, but so far im interested. The price will decide if I give it a shot
Good looking light!
Have you applied for a review? They want someone to do a video review if I’m not mistaken.
Solution confirmed —Threaded copper ring.
Nice!! 
Hello Haikelite,
can you perhaps share some information about the stepdown process?
- How long can the light produce 8000 lumens before stepping down?
- Is it time based, or is it temperature based?
- Is there a fulltime thermal protection on the light?
- And do you get the full 8000 lumens with half depleted cells?
Thanks!
The reflector is very shallow. Not gonna see any useful light in 200 metres range. Sometime a hotpsot is needed to spot things at distance.
Interesting to see how this compete with olight x7.
Any auto step down from turbo or high?
And why there is a gap between body tube and head?
Is there any donut hole in the beam?
can not see any donut hole in the beam, close to wall or at distance.
Specific info will be public next week. 
The hotspot can only been seen in close distance.
What gap do you point to? The gap among the cooling fins? It’s designed for lanyard hole. There are two landyard holes in the head, normal camera belt can fit this light,though no much need to use a belt for soda can light. Would be good to use a belt in other two big haikelite monsters.