Mighty Dwarf Vibration Speaker, 5W, MicroSD slot (Blue) 5W Speaker2 Ohms3.5mm Stereo JackMicroSD (TF) card reader for playing your MP3 files. (MicroSD Card Not Included)Rechargable Lithium BatteryUSB Powercolours (Black, Silver, Pink, Red, Blue, Green) Surface resonating technology with 360 omni-directional sound distribution Rechargeable with internal lithium battery or USB cable included with each unit MicroSD/TransFlash (TF) slot for wireless performance (MicroSD card sold separately). PC/Notebook, MP3/CD/DVD Player, Mobile Phone etc. Portable; Ideal for on-the-go audio, conference calls, and presentations