... plug 4)With MP3 player Vibration speaker for laptopProduct brief introduction: Vibration Speaker works by way to ... and transparent soundhollow wallGood spacious sound performanceFeatures: Features:Vibration Speaker, 10 W, With MP3 player, 2GB, ... 3.5mm stereo plug for many digital audio players like MP3/4 player, laptop, PC, MD, mobile phone ... mini I-mu i-jerry USB Powered Vibration speaker for laptop