This thing is perfect, I can't imagine a way it could be better. A few months ago I decided I was sick of fumbling with my auxiliary cord during my commute, which barely worked half the time and gave me a hiss/white noise the other half. I picked up a bluetooth receiver that was powered through my cigarette lighter's USB charger. Fast forward a month or two, and any shake of the wire killed the connection to that thing. So I started to look for battery powered Bluetooth receivers.

I bought these through my local grocery store. They definitely give me extreme energy, but they feel almost dangerous. I would take them before leaving to work and not long into my drive my heart wound start pounding and I would sweatand feel terribly hot. I kind of liked the feeling, but the reaction I had due to the niacin was unbearable. My skin from head to toe turned lobster red, burned, and was tender to the touch for about half an hour every time I took a dose, even with just one pill. I can't recommend these, especially if you haven't consulted a doctor first to see if your body could handle it. The Red bottle is excellent, without the side effects.

Speck makes good products, and this is one of them. Fit was great. The 2 problems that I did have were expected, and it ALWAYS happens with this kind of material. The plastic is glossy, so it scratches easily. The rubber is a bright color, so it will get dirty.

It appeared to save documents. It appeared to do huge backups - 8Gigs+. But when I tried to export to PDF, I get an error message. After six months of denial, customer service looked at the error log and confirmed that my documents are gone forever - and the paper copies have been discarded.

The workout variety is limitless and results are all but guaranteed! Great durability. Would highly recommend!