In my eyes, surely one of the best size / power / quality / price that I have been the opportunity to meet. Even after reading rave reviews about it before receiving the product, I was stunned at the first grip.
Very easy to use, simply press the front button to hear the speaker to wake up. Then you are free to use the NFC, Bluetooth or even the supplied cable to play music and let the magic operate.
His (very) small size allow you to take it and put it wherever you want and its 12 hour battery life will make it a perfect partner in your various excursions. On the down side, we regret the lack of volume control buttons that have been a little more substantial.
If you are looking for an ultra-portable speaker without wanting to sacrifice power and quality you have before you the product that may well achieve all your wishes. As for me, try it and adopt it!