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: Can the MP3 player/speaker function be used while charging?
Document: You can either listen through the speaker function, or you can plug in earphones to listen...the same earphones you'd use on your MP3 player. * The charging cord plugs in to the device on one end and the other end has a USB plug. If you have the proper converters, then you can plug this into either a wall electrical socket or into a car charger. Or just charge it by plugging it into your computer when the computer is turned on.
Overall, I am very pleased with this product and would recommend it to anyone who needs a portable MP3 player. I only wish they had different color options and think of a way to have it work while charging the battery.
I have only used this with my MP3 player and I am totally impressed with the sound that comes from this little ball!For under $20 you cannot beat the sound
I was looking for a portable MP3 player with an SD card option for my 1 year-old daughter who loves music. It takes time to get used to the controls as it is a single button. However, my daughter loves the player, she is carrying it around and dancing to the music. It is also indispensable during feeding time.
I love this thing. It has amazing sound for something so small. It is very durable (my 18 month old son plays with it). I have also plugged in my Bose headphones into it and used it as a portable mp3 player. It actually powers my Bose headphones better than any other MP3 player I have used. Don't hesitate to purchase!
Love these speakers. I have two myself, though I have only used the SD card function once it was very convenient when we were camping...99% of the time I am just plugging it into my phone/tab/mp3 for the crazy better sound.
I've been using this speaker since july. Loved it. So small but powerful. If you set it on some surface when listening, make sure it's not very hard surface or you'll have it making vibrating sound on every bass note. I used it mostly as stand alone mp3 player and rarely as speaker for netbook.
I wanted an external speaker for my IPod classic and this product is great. The speaker does produce excellent sound(considering size) when used in this mode,& in the PMP (personal music player mode) playing from an SD card the sound quality is excellent as well. Tech support from the company was excellent, I contacted them with some questions  and they were great! HIGHLY PLEASED WITH SPEAKER can take my music anywhere and not risk a pricey IPod being damaged. Will buy more for Christmas!
This speaker is better then any other bigger speaker computer speakers I have bought before that cost more. I think you cannot find a better speaker for the same price and also can be use as a MP3 player.
Volume is driven by device the speaker is attached to and seems to make out at mid level of SD card playback.I would NOT recommend this product for playback from smart phone, MP3 player, laptop etc. Great speaker for background music running off SD card, just be ready to change up your content since tracks play in order.
Answer: Yes