Feature:
It has 3 features - on, off, and volume (on the reciever, not the bodypack) Simple and uncolored!!

Quality:
I can't BELIEVE i got this unit for $130. That's the entry-level price of any guitar wireless!! This unit is FAR better than any of its competitors at anywhere near this price. I could expect to pay $600 for this unit just based on its quality. The bodypack is plastic, so be careful not to fall over backwards or anything while you're using it. Also the guitar-to-bodypack cable seems flimsy so be careful with that. But you'll still save money in the long run if you go through guitar cables like I do. Aside from loss of volume, the unit devliers a clean clean sound, without cutting out or phasing! The belt clip is tight, and the bodypack is so light that you forget you're wearing it!! Also, a single AA battery lasts for 30 hours in this thing!! Note to those who jump around on stage like me - buy a Dunlop wireless-bodypack-holder thinger. They're like $10, the bodypack fits into the padded bag for protection, and you strap the case to your guitar strap around your back. The top clips shut tightly so the bodypack doesn't fly out when you jump around. I had that problem, but I got the Dunlop wireless bag-case thing and safety-pinned it into my guitar strap - so now I just put the transmitter into the Dunlop bag, snap it shut, connect it up and it's safe and sound in there and doesn't fly off the strap no matter how crazy I get!! Overall, this unit rocks for the price - no question it's the best deal you'll find on wireless guitar things, and the sound is great.

Value:
See above^^^ Overview - can't beat this value!!! I could expect to pay $600 for this unit.

Desirability:
I can't decribe how much more the ladies want a guy who's flyin around onstage without getting held back by stupid cords that snag and pop out or get tangled/wound up. I'm not spending my time kicking the cord out of my way or being careful not to trip over it anymore, so I can have a carefree romp around the stage worrying only about my music!! Plus it's just plain desireable to have that pro-looking wireless thing clipped onto the back of your guitar strap while you're sliding around the stage without a care in the world! I love this thing!!!

Sound:
I give it a 7 instead of 10 because you lose some volume when you use this as opposed to a cable. Other than that, this thing seems to deliver a clean uncolored sound, largely static-free unless you're transmitting through a thick wall or something (Sometimes when I'm playing a show I get excited and run around backstage or out the door while I'm playing, and it makes some static then, but doesn't lose transmission).

Ease of Use:
See above - on, off, and volume! It works with no setup right out of the box.

Support:
haven't needed them.

Overall:
Except for the slight loss of volume, it's the perfect unit. Cheap as they come, 30hr battery life on 1 AA battery (!!!), lightweight, simple, durable enough for what it's going to be put through, doesn't cut out, true sound reproduction, blah blah blah just buy it.

Sound:
All I know is I was missing alot of the nuances of the electric and acoustic guitar. I finally dumped it.