Pros: Plain sound quality, good enough for the average user looking for a cheap and decent earphone. If you're looking for something better, you really shouldn't be looking for sub $10 earphone (with rebate).

Cons: I know from my past experiences with Sony that this will definitely last me at least a good year but it still feels cheap and a bit flimsy. Also, it's recommended you get an alcohol wipe to clean it once before using because this is refurbished.

Overall Review: I own a higher-end ($120 bought in 2012) Sony active noise-cancelling earphone to compare with, and I can definitely say Sony went very cheap with the quality of this earphone. However, the sound's aren't that bad. I actually bought this earphone because my noise-cancelling one has a big clip-on module (for battery and buttons) in the middle which gets annoying for in-doors usage. I just wanted a cheap, light weight, and decent earphones.(iPhone controller was a bonus) Final thought: Only get this earphone if you are willing to go through the MIR process. It's definitely not worth the whole $20, but definitely the best for $5.

Pros: Does what i's made to do, I like being able to set it up with custom settings.

Cons: Not exactly the best range in the world.

Pros: Great design, really only one of its kind actually.

Cons: sadly it blocks the signal a bit. I only get 2 bars of signal in my room, having this case drops it to 1 bar, which causes disconnects.

Overall Review: If you live in an area where you always get 3~4+ bars of signal, it should be perfectly fine for you.