Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: What kind of batteries does the helmet take?
Document: It is better than the Jackson Nexgen that I had. Overall a very good helmet.
I have been wanting to upgrade to a new helmet and this had the larger view I wanted. It works great!
Excellent helmet you can actually see what is going on , if I had a welder at home I'd buy another one , Hum maybe I should look into getting a welder at home .....LOL...
Great field of view, comfortable, durable. This helmet was exactly what I needed for my startup welding shop. After using several cheapo ($40-60) helmets I knew it was time to get a real helmet.
This helmet  works very well for all the tasks I have required of it. The auto dark lens is of substantial size and very easy to operate with many adjustable parameters. The helmet shell and head gear are average quality not quite up to the standard of the lens.
This helmet has been used for several months on a medium duty basis. It has held up great. It has an extra large display that is fully adjustable as to darkness, delay after blackout, and sensitivity. We actually picked up 2 different styles of the same model and both have worked above our expectations so far.
It's a great helmet for the price. The auto darkening lens works great. All the functions work well. The adjustments are hard to adjust with gloves on. The head gear fits well and is comfortable. I'd buy another one if I needed more than one.
Bought this for my husband who is just learning to weld. He had a different (cheaper)helmet with a smaller lens and was having trouble seeing his weld. Problem solved! Good quality helmet. Worth the extra money. Should have spent it in the beginning instead of trying to cut corners and save a buck.
With my aging eyes this helmet has helped my welding greatly. I have tried other helmets of coworkers and this has the largest viewing area of any I have seen. Also the ability to lighten the lens is a great feature. The helmet is well constructed and with a little common sense it should serve me for years to come.
One of the major problems to my welding was never able to see to start with. With this helmet it is like wearing a pair of yellow sunglasses and I can see perfectly what I am doing before striking the arc. After arcing I can still see pretty well what is going on. Makes it a bit more fun welding.
Answer: no