Color:Black , Blue , Pink , RedOnly the sound in the mouth is collected without picking up any background sound.Wired microphones guarantee more stable output than wireless output.Less buttons, easy to operate, this routine voice amplifier can meet most of the needsTrue appropriate guidelines, teachers, supermarket promotionsMini dimension design, portable and fashion.Material: ABSSize: About 85 x 39 x 117 mmWatt: No. 5Resolution: 80dB.Working voltage: DC 3.7VCharging voltage: DC 5.0VCharging time: about 4 hoursWorking hours: about 6 hoursDisplay: LEDAudio format: MP3 / WMA / WAVWorking temperature: -5 ° C -40 ° CExtended memory card: maximum 32GB (excluding)Package Contents:1 Portable speakerPlease note that due to the difference in lighting and computer displays, we cannot guarantee 100% of the actual colors.Due to different measurement methods, there may be an error of 1-2 cm.please rest assured to buy, if you have any questions, please feel free to contact us