Sell Rolton K400 Portable Loud Speaker Mini Voice Amplifier Microphone for Teacher Tour Guide Promotion best price

Type: Mini Audio Speaker Main Body Material: UV & ABS Power: 5W Input Power: Power Adapter /USB Power Supply / Lithium Battery Speaker: 2.5 inch X1 roduct Color: Black / Red / Pink Degree of Separation: 80dB Distortion Degree: 1% (3.7V, 1Khz, 1W) SNR: 83dB Working Voltage: DC 3.7V Lithium Battery Capacity: 18650 battery Impedance: 2Ω Display Screen: LCD Audio Format: MP3/WAV Size: 85mmX85mmX34mm (WxHxD) Working Temperature: -5 ~ 40° Feature: - This product can Continuous work for 72 hours. - This product Single track loudnesss can reach 128dB. Package include 1 x K400 Voice Amplifier 1 x User manual 1 x USB Cable 1 x 1200mAh  replaceable Battery 1 x Waistband Belt 1 x Professional Wired headset Microphone Place of use： Teacher teaching Company meeting Guide commentary Dancing practice