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18-core card speaker
Functions and features
●Support for TF card play.
●Built - in FM stereo radio function.
●Can external MP3, IPOD, PC, CD, laptop and other sound sources.
●Aluminum alloy shell design, compact & stylish.
●High-quality audio decoder chip design, perfect sound performance.
●Using high-fidelity full-range designed unit speaker to make the middle, high and bass structured.
●High quality rechargeable lithium battery make it convenient for long time use outdoors.                          
Technical parameters and specifications:
●Output power：3W（RMS）
●Frequency response：60Hz—20KHz
●S/N：>80dB
●Distortion：<0.5 %
●Audio formats：MP3
●Specification of built-in lithium battery：3.7V/1000MAH
●External charging power：USB 5V/500mA
●Dimension(mm)：62*58