I now have another highly modified dive light for sale.
This is a Ultrafire W200. Its a copy of the Tilltec W30 AKA AElight W30.
It uses a aluminium head and plastic ( probably Delrin) body and has 3 O rings sealing the battery compartment.
The lens is nearly 6mm thick glass and its weakest point. ( I have used 3.2mm thick glass with a much wider diameter to 50 meters).
Its rated to 200meters although I have no way to verify this.
It has done one test dive to 57 meters and performed faultlessly.
Anyway the modded version uses a Cree R2 LED driven at 1000ma.
It now takes 2 18650 Li Ion rechargeable or 4 CR123 primarys!
I can make it so it has a 5 degree beam up to 20 degrees although I find the 10 degree to my liking.
Run time at
full out put should be about 4-5 hours on 2x2500ma 18650 cells.
It will give no warning before shutting off due to low batteries.
Length is 200mm
Bottom pic shows W200 on left and IST on the right.
As you can see the W200 is slightly brighter and slightly wider angle.
Cost is $300NZ ( about $170us)
I should point out this is a prototype so has had little testing. I feel confident in it though and warranty it for 6 months.