Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: What is the barrel diameter of this light where you hold onto it?
Document: Make sure you check the light before going in the water though to prevent any issues.
This was meant to be a back up dive light. I now use it as my main. Great product I could not be more pleased.
This only runs on 3 AAA batteries, and the brightness is INSANE. During our night dive, I had the brightest light. Especially love the low power setting.
What else is there to say besides it's a fantastic light. It's durable, built to last, and extremely bright. I use the 30% setting most of the time, because the standard brightness is overkill for most applications.
Have been diving with this light at least 20 times. Perfect for checking under ledges and other structure for fish/lobster. Focused beam is best for this IMO. Diving up to 120' without any issues.
I dive for lobsters at night with this light and it does an amazing job. The other guys I dive with always ask where I got this thing cause they want one once they see it in light up the water.
While diving in extreem limited visibility water I was able to read my compass computer and identify the color and read name plates. Very very good light I will buy a second one no questions asked.
I use it for my backup light, but it also works great as your primary light too, I use rechargeable batteries (3 X AAA) and I replace the after each day of diving and I never have to worry.
Bought this as a secondary dive light and ended up making it my primary. The on off button on the back is simple, it's a convenient size, it's bright, it is waterproof and rust proof. I used this light on 20+ dives and to a bit over 100 ft so far and have been very pleased.
Orignially bought it as a backup but using it as a primary.Great power for its small size, and sits good in the hand.Somewhat tricky to change the light setting whilst using it as the tap switch is on the back, however it makes it harder to turn it off accidentally.
Answer: no