Specification :

Features
Get the best music out from your Notebook PC and MP3 anywhere with HUMP NF02.
With USB 2.0 plug and play connection, no external power is required. It is an excellent speaker system to be carried with your notebook computer. The HUMP NF02 is crystal clear as much with its looks as well as its audio quality. Featuring ZeroV enclosure with 33mm x 2 micro drivers rated at 1W/channel delivers amazing audiophile performance.
It's so notably easy. Connect the HUMP NF02 to your PC or notebook USB port then let the concert begin and enjoy your quality music wherever you are.