Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Do i have to buy the Micro SD Card for this to work?
Document: Work with my kindle and LG smartphone, good quality, work well and comfy. Use to watch shows, listen to o music and exercise, would buy again
Just got them in the mail yesterday they work Okay, but some hour later after uses it stop working, its not turning off and the blue light stay on all day, but there no sound-no radio, no bluetooth or SD functionality......
If the volume was louder with some bass. Definitely a 5 stars. To really feel the music. Good product to buy.
I purchased this an April and it was broken when I bought it, so I returned the item with same materials. After three months later, I'm still not getting the money. It was a mistake to buy this terrible microphone. Now, my thirty bucks are gone and I can't afford another microphone.
Love these so far, Bluetooth will drain phone battery if running long distances, use the sd card function for that purpose! Great sound for the price! !
didn't like it because after one day it started to  make a very loud noise and when the power was off. The item didn't work anymore after that.
These headphones work pretty good but there are no strong bass  in them, for the money works good music and talking
It was able to serve all me needs. Battery life is incredible!! Perfect for wireless listening at work and at play.
Don't work like their suppose to and battery life sucks and volume is terrible. The device is always dis connecting.
These work great and sound decent. Could sound better as I know of a pair that has a better 40mm driver and is not much more money.
Answer: Nope