Small cute and attractive. It is good for me as I don’t wish to have those large power adaptors that usually must be used with the speakers. And don’t look down on the size. It packs a strong powerful speaker.
You use the USB cable to charge the speaker (according to documentation, it takes about 4 hours to charge the speakers which should last 16 hours or so). In addition, it comes with a nice bag to hold the speaker (assuming you bring it around. I intend to use it with the Mac Mini). The USB charging cable comes with a 3.5 mm speaker cable which means you can use that cable to charge as well as to plug into your PC audio out at the same time with a single cable.
Alternatively the speaker itself has a line in cable too which you can use (probably with your MP3 player). I tried it with my iPhone and it is pretty cool :)
Be careful. I heard there are fake ones around and X Mini II is the actual real genuine ones. It retails for about 48 Singapore Dollars.
Or use it with your Mac Mini and a Apple Remote