Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: If it is wireless, why do people say you have to plug it into the TV?
Document: I purchased the Portable Wireless TV Soundbox (&#34;Soundbox&#34;) on April 26, 2014 from Olivabel for my 92 year old mother -- who is hard of hearing. I arranged for the Soundbox to be sent directly to her for her birthday in early May 2014. She could not connect the Soundbox. Because she lives 400 miles away, I was unable to visit her until Mid-May.
This is not a product for older people who are not electronically savvy. All I really wanted was a speaker to attach to the TV and sit near my chair. This is very light weight. You have to charge a battery to keep it going. We could not even get it to work with our small flat screen tv. I don't want to have to keep it charged for it to work. So am sending it back-definitely not for me.
This works as good as expected. I use it as a bedside speaker for my bedroom TV so that my late night TV watching doesn't disturb my hubby as much. I can turn the TV volume down and listen to the speaker right next to me. It's not great sound, but it's good for the purpose I bought it. The directions say that the unit will automatically turn off after 3 minutes of not receiving a sound signal from your TV. That's not the case.
I also purchased a second power plug so now my husband no longer has to return the box to the base for charging.This system is absolutely perfect for the hard of hearing. What extras you may need depend on your existing electronics and if recharging is an issue for you or not.
My neighbor has one of these units and he finds it quite useful. However, it renders his internet service useless while plugged in.Be aware that this product will very likely interfere with 2.4Ghz wireless internet routers. It broadcasts on a number of channels and seems to shift over time. It does not listen for other transmissions and there is no way to configure the channel or power. It would be much more usable if the channel could be fixed so that wireless routers and this device could coexist.
He has been asking for something like this. I found it and thought we would try it.It is amusing to see him actually be able to enjoy the conversation on tv now.Before he was always having to ask me what was being talked about. Apparently the acoustics in our living room do not work well with his hearing aid. But this has been a huge hit!update 6/4/2014.with the parts that came with it would plug into our direct tv box.
I purchased this item due to recent hearing loss and it does exactly what it supposed to do. No more loud TV.
Works great for someone with hearing problems. It has very good sound. The unit had a loud buzzing noise, but this was due to cables not completely connected into the TV on the back, once this was corrected, sound is great!
Speaker system is excellent! Got it for wife's aunt who has a difficult time hearing TV. Has a three tone setting nad volume control knob that really makes the sound clear and of high quality. Packaging is also excellent! !
The sound is very good on this and very portable. My husband is a little hard of hearing and he would have the TV so loud that it could be heard in other rooms. Now he puts this beside him and the volume is right there for him to hear without the TV blaring.Would definitely recommend for purchase. Well worth the money.
Answer: What you have to plug into the tv is the "base".   You lift the handle and carry the top part wherever you want to hear.   I am hearing impaired and have used many different devices over the years.   It recharges in the base that is connected to the TV.    My TV is in my bedroom and I usually have the device in my bathroom.  Although I am unable to see the TV from my bathroom, I can hear the audio. Sometimes I have it at my bedside so I do not have to turn up the volume on my TV.     I have another similar device in my kitchen.   That base is plugged into my TV in my living room, which I can see from my kitchen.   This allows me to work in my kitchen, see the living room TV and  mute my TV and only hear in the kitchen so that my TV is not blasting out others.  I hope this explanation helps.   The beauty of this particular device is that it is portable.   The one in my kitchen is not portable, but plugs into an electrical outlet and picks up signal from base on living room TV.