Recommend a square dance portable speakers, can plug the card can plug the U disk, can display the song track, about 30 people with, sound quality a little better.

We use on the square called "U disk player" only 100 yuan, when the new can be used continuously for 3 nights (1.5 hours per night), the use of almost 2 years, and now we have to use 2 nights to be charged once. Normal we have about 20 people in the square, more often there are more than 30 a little, the effect is very good ah, the size and very small, I estimate the volume of 15 * 15 * 5cm. But does not show the song title. If you think my answer is still satisfied, please help to select this answer as [satisfied answer]. Thank you