Speaker with Led screen: Support FM+U-dis.+TF card WIth Line-in,External battery High-fidelity speakers,and sound more nature Detailed Product Descriptio USB car speaker Build-in Li-battery Spport FM/SD/MMC CE/FCC/RoHS avaliable Stereo sound  

USB speaker

standable speaKer Features:

Compact size stereo audio systemBuilt-in Li-ion battery, no need extra battery is requiredBuilt-in digital amplifler, saving energyWith storable 3.5mm jack audio cableCompatible with all portable audio deices

Technical Parameters;

Power output :RMS 3W×2 THD+N1%

Frequency response ;50Hz – 20KHz

Input voltage ;DC 5V

Speaker unit  ; 40mm 4Ω 3W

Built-in battery:Lithium-ion battery

SNR: 90db

remote control ,line out earphone jack

usb cable with DCin 3.5 frequency line

phone connector

digital speaker