... .Through CE/RoHS certificate 3.Stereo sound, quite clear Minitype speaker with USB cable for laptop ,ipod,iphone *Stereo sound, quite ... and technological feeling.* Digital audio amplifier, full frequence speaker, let your ear with transparent sound effect product details: model JH-M3030Machine ... Application: MP3 ,MP4,computer,mobile phone,etc. mini music speaker with USB cable for laptop &mobile phone