ROLTON Κ400 OEM Φορητός Amplifier Ήχου με μικροφωνο

The product itself has two mainly functions use, one is an amplifier, and another one is a multi-applicability speaker.
Amplifier has clear voice, stable, and loud sound to use in coaching, presenting, training, teaching with many people in big space.
The speaker can apply on MP3 and WAV audio form. Music player and PC speaker are included.
Music player has two interfaces, one is for TF card, and another interface is for USB flash drive.
The indicator light gives different signal. The blue indicator appears when power on. It flashes. when insert TF card/USB flash drive. When remaining electricity is below 10%, the blue light. will flash. On the charging status, the red indicator is be on until fully charged would be off.
size:85*85*34mm
Material:ABSDescription
Material: UV & ABS
Rated Power: 5W
Input Power: Power Adapter /USB Power Supply / Lithium Battery
Degree of Separation: 80dB
Distortion Degree: 1% (3.7V, 1Khz, 1W)
SNR: 83dB
Working Voltage: DC 3.7V
Input: DC 5.0V
Lithium Battery Capacity: 1*18650 battery(included)
Impedance: 2Ω
Display Screen: LCD
Working Temperature: -5 ~ 40°