ZOWEETEK Voice Amplifier Microphone Headset for Teachers, Original Personal Voice Amplifier, Work of 12 hrs, Portable Speaker fo

ZOWEETEK Original voice amplifier Feature: ? The sound is clear, crisp, no noise and no distortion. Comes with an Advanced Microphone that offers crystal clear sound. ? Built-in 1800mAh Lithium battery can be used continuously for about 12 hours. Long using and standby time. ? Ultra-Portable Design of LoudSpeaker - Can be worn around waist with the help of a waistband. ? Loud enough with 10W output - ideal for group of 10-50 people ? Compact size (4. 1 x 1. 4 x 3. 4 inches) and light weight (0. 36 lb). ? Can work as Speaker for Mobiles, Computers, iPads/ Tablets with the help of Aux Cable(Not included in product package) ? Supports USB Flash Drive,TF card Specifications: Max output power: 10W Output Impedance: 4O Charging voltage: DC 5V 500mA Music-play time: 6-10 hours Frequency response: 90Hz-18KHz Work temperature: -10?-45? Amplify time: 8-12 hours Charging time: 3-5 hours Standard Package: 1 * voice amplifier 1 * waistband 1 * wired microphone 1 * US charger 1 * charging cable 1 * user manualNote: ?The microphones must not be facing / close to the voice amplifier, they need a certain distance to avoid noise, and when the volume is turned to the maximum or interfered by some equipment, it may generate static noise.