Microlab MD212 Bluetooth Wireless Portable Stereo Speaker, Black: * Built-in bluetooth wireless technology with bluetooth 2.1 + EDR, hFP, A2DP profiles * Rechargeable battery, energy-saving function * Portable sound bar for any tablet or smartphone with 3.5mm stereo input * 2 x 1 alloy coating drivers to deliver rich and clear sound * Distortion-free with built-in digital processor * Two power modes to USB or rechargeable lithium battery powered * Output power: 2W RMS * Frequency range: 150Hz to 20kHz * Signal/noise ratio: >75dB * Input: 3.5mm stereo plug, micro-USB * Color: black