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

Input:
Question: What type of battery do these take? Do these have timers?
Document: This product really works! After having my 3rd child, most of my lashes fell out. I got this from my dermatologist and now buy it from Amazon. He told me that it had the same active ingredient as Latisse, but won't turn your light eyes brown or discolor your eye lids like Latisse sometimes can. I have blonde hair and blue eyes and fair skin goes along with that. I didn't want my eyes or eye lids to change color so I tried this!
The husband wanted an inversion table - nothing fancy. This unit fit the bill and was reasonably priced. I ordered it before Thanksgiving, I think, for a Christmas gift. It was delivered within the specified time, however the "feet" came broken. We contacted the the supplier and they asked for an email which we sent. No reply. A week later we called them again. They asked for pictures which we sent. No reply. A week later we called again.
Right before Christmas we recieved "new" feet for the unit. It was apparent to us that these "new" feet had been taken off of an used unit as they were clearly worn. Nevertheless, they fit and the unit is assembled and works. Just shows you that you get what you pay for.
Now, people ask me all the time if my eyelashes are real. My lashes got so thick and long that I went to using it every other day and sometimes every three days. I've been using it for over a year now and they still look so perfect. At first the serum does tingle a bit, but after a few weeks, you can't feel it anymore. The directions say to put it on a clean face before bed, but now I just put it on in the morning after my lotion.
I love this product and will continue to use it. Oh, one more thing. A little goes a long way! I have had the same tiny bottle for 6 months...not 2. Enjoy it! !
Answer: no