... Dwarf Vibration Speaker 1.Get different sound on different surface 2.Portable , cute and fashion 3.Novel design Drawf resonance Speaker ... high-tech such as resonance theory Output :3W(rms)3.5 mm stereo plug compatible with all MP3, MP4, CD, DVD, mobile phone, computer ... soon. Shipment can be effected in 2-15 days after confirmation of order(100-1000pcs 2-3days , 1000-5000pcs 5-7days , 5000-10000pcs 10 ...