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Micro SD/TF Mini Speaker / Bluetooth Speaker Detailed Product Description                              1.portable speakers support SD card /MMC card/mp3 player 2.with USB charge 3.with FM radio 4.display show radio channels portable speakers Main function and features:1, Support SD card and USB disk, automatically read the first audio device you insert2, With AUX IN, it can compatible with MP3, MP4, IPOD,laptop,CD player and PC, etc.3, with FM radio function,frequency range: FM: 76 -108MHZ4, excellent tone quality,with wallyson dual channel stereo.5, Dual power supply, built-in rechargeable lithium battery and USB power6, It is convenient for your travel ,portable, super slim and mini size, easy to carry7, Material: Pure ABS+ metal loudspeaker net

External batteryMemory play&storage units

Power output: RMS 2.5W x 2  

Speaker:whole tone1.5"  4Ω 5W

Frequency Response: 180Hz ~ 18kHz

SNR:≥85dB

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