Summary: I got this because my built in microphone didn't work on the pre-owned DSi that I purchased. I looked into having the built in microphone fixed, but that would have cost more than what I paid for the DSi. Most games you don't need the microphone, however the new zelda games require it at certain points. The headset works, but it is not perfect. The earpiece is fairly comfortable, however the length of the microphone is too short for me.
Summary: My daughter's mic no longer works on her DS. We bought this so she could still play Pets Nursery... It worked out great!!!!! She loves it!!! Also, it arrived two days early! Great price, great product, great service!