Description

Headline: Portable Metal Shell Speaker with Expansion Bass & Micro SD Card Slot,FM and USB

Features:
1/  Portable, Mini, Metal Shell
2/ with LED Screen
3/ Dynamic internal magnetic
4/ with micro SD Card slot
5/ Internal Lithium battery, USB Charge power
6/ Audio Line In and Line out with various player devices by 3.5” plug
7/ FM Radio function
8/ USB disk usable
9/ Function Switch: Pause, next/previous,Power on/off,Volume+,Volume-, Audio-output, Audio-input, USB

Specifications:
1/ output power:3W
2/ Frequency response:**0HZ**2KHZ 
3/ Speaker: *0mm,4 Ohms
4/ Li-ion battery: 3.7V  **0mAh  
5/ Continue Playing time: 1.***2Hours
6/ Humidity Test: ****5% RH *4H
7/ Heat test: ****-**5℃
8/ RF:**0Hz±*0%
9/ S/N Ratio: *5dB±3dB
*0/ DCR(Direct Currency Rated Impedance): 3.2Ω± 5%