Instruction: Answer the given question using the supporting document.

Input:
Question: Can you use only 1 of the 2 screens ?
Document: I received these DVD players today. They are not as advertised. The product description says they are 7 inch LCD screens but the screens are actually 6" by 4". I am not sure where the 7" comes in because the whole unit measures 8 1/2". The screens are so small.
I recently purchased this item after much researching and reading reviews of other similiar products. I was desperate for portable Dvd players for my sons (ages 3 1/2 and 7) for our long ride on vacation.These are great! They were VERY easy to hook up. The actual screens fit very well around the headrests and were perfect for viewing by my sons. My oldest son (age 7) was able to work the entire thing independently including changing dvds. Volume and picture are great.
We purchased this Dual Screen Portable DVD Player before going on a long driving trip, so our children could be somewhat entertained. *Pros:1) Overall, it's a good product for our needs.2) It's easy to set up and easy for the children to use.3) Fairly inexpensive considering it's portable size and nature.
I found out the hard way that you really should strap the 2 screens together when not in use. The main screen got damaged. The second screen still works, and the main unit still plays DVD's. So that's a plus (especially when you find out it's broken just when you need it).
Got this Dual screen DVD player 2 years ago. within 3 months the screens went black and never came back on so they sent me a new one. Then last week they do it again and they tell me to take it to a shop and have them fix it because its not under warranty. Well looking at all the reviews it should be a recall. Also have had 4 Philips devices fail after 2 years of use never again will this kid buy anymore.
I purchased this player for my kids in the car. It's very good, and in fact I ordered a second one for my other car, but put only 4 stars becouse there are some issues I don't like.1.- My original idea was to move the screens from one car to the other, but in real life it's wasteful to do that. It's necessary to deattach the two belts, unplug wires etc.
Primary screen stopped working after 1 week. Other screen would be black and white for first 5 minutes of play. Buttons are also hard to use. Save your money!
I purchase this in Jan 2011, by July 2011 the dual plug for the car is not working anymore. I really love these dvd players but havent been able to use lately. The good news is there is a 1 year warrenty on them and philips is sending me a new plug :)
I asked that they expeditiously send the screen to my family's house in Ohio so we could at least use it on the ride back and they refused.The new screen arrived in September and we sent back the old one. In September 2012 the second screen AGAIN is not showing a picture, only audio. AGAIN I call Philips and now they tell me my warranty was only 1 year from PURCHASE, not replacement. I was furious.
I was also told they are all out of stock now. They told me today that my only options are: 1. find my original receipt to be sent a full refund OR 2.
Answer: Yes you can. You just need to connect the main screen to a power source, put a DVD media and enjoy!