★ Output Power：RMS 4W（2W+2W）THD=10%
★ Frequency Response：150-18000HZ（+/-3dB）
★ SNR：≥70 dB
★ Speaker：OD 45mm, Anti-Magnetic 4Ω(ohm)
★ External 3.5mm stereo audio plug
★ Retractable cable to the computer
★ USB 5V  supply  or adapter DC-5V supply power，Power can not be higher than 5.5v
★ Speaker size：74.5*50*52mm*2
Can Straight insert MP3, MP4, CD, DVD, computer, IPOD, cell phone player music.
Professional  with computer use。
   Color: Black, Green, Sliver, Bule, Pink