2.0 USB direct transmisson of power,pure music embodies.High-quality IC engines,aweet pure sound quality. External control internal circuit of low-power shutdown mode.stereo headphines to enlarge mode,and internal thermal shutdown protection mechanism,and make use of circuit and characteristics of the most large extent the decrease of noise (clicks and crack) and distortion. Specifications 1)R.M.S.:1W*2 2)P.M.P.O.:320W 3)Drive Unit:2.25" 4)S/N:
