Pros: Tiny

Cons: I bought this mostly to use with a desktop pc and a wireless headphones ARCTIC P311. It says "1-100m", so for me, it disconnects in 5-6m (1m is approx. 3ft), and I live in a paper (frame) house, not a solid brick one. Very, very disappointed. After disconnecting, it is not easy to connect the headphones back. Noticed a couple of seconds delay when watching a video, and not sure, if that's a bluetooth's problem, or the headphones.

Overall Review: It took almost a month to get it from China to US. Next time I'd rather pay extra and get the purchase in a couple of days. Rated my tech knowledge as average, because I dont have a degree in science.