Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: does it come with battery
Document: Great reviews to the folks before me. However, I'd like to share that this thing uses a 9v battery. And it doesn't come with one.
It's a good deal, and it's just like on the demo video it's very easy to use.However, it doesn't come with a battery.It requires a 9V battery which is rare.
Works well and was easy to figure out. Did not come with a booklet so that was good. Great stocking stuffer for my husband.
This is a must have for a homeowner. Everything from hanging pictures to wall mounts for TV's this works and is very user friendly. My only complaint is that the instructions that come with this are for a different model.
I have owned this stud finder for over a year, and have come to the conclusion that this thing does not work. When it indicates a stud, I now test with a small nail to see if it is right.... it almost never is. Look elsewhere! !
If I didn't know that the studs were 16&#34; apart, the product would not have been useful. For studs, it was not repeatable in finding the edges, coming at the studs from both sides gave different answers. It also kept telling me that wires were present (in both modes) for each stud that was come across.
Got this for mounting my TV, and has come in handy with all kinds of things!This thing is accurate!! !I find the studs from both the left and right, and I can literally map out the studs down the wall, connecting the dots. You would think I had the blue print!No need to spend more money!
It works perfectly. My stuff is hanging; it found the studs easily. Its very easy to use. Make sure you have a 9 V battery.
Every single inch of every wall had studs. Ridiculous! After purchasing the requisite battery, returned it immediately and used the echo in the wall and a hammer. Duh!! !
Good unit.Works very well. I am rating this a four star only because it doesn't really go deep enough but that's to be expected since it is run by a small battery.
Answer: yes