JIY Loudspeaker Teaching Guide Microphone Shouting Outdoor Training Loudspeaker 360 Wide-angle Sound Product parameters Product type:Loudspeaker Material: ABS Product color: Black Loudspeaker size: 10.5x8.5x3.6cm/4.13x3.34x1.42in Packing size:20.5x15x7cm/8.07x5.91x2.75in Loudspeaker weight: 290g/0.64lb Gross weight: 485g/1.07lb Frequency response range 10-100kHz Distortion rate 0.01% Output power: 15W Current: 150mA Battery capacity: 2200mAh Endurance: 10h Product description: High power multi-function loudspeaker, suitable for multiple places, classroom teaching, outdoor activities, guide explanation, training speech, supermarket promotion, entertainment and fitness, etc. one loudspeaker can easily handle it. 15W high-power voice coil speaker, good sense of hierarchy of surround stereo vocal restoration, built-in 2200mAh lithium battery, 10 hours of lasting use. With low-thd adaptive technology, it has High-FIDELITY and low noise, and will not produce obvious distortion even at high power output, so it can prevent howling and improve sound quality. High power, wide coverage, 360 wide-angle sound, wide sound coverage, strong penetration, and better voice protection. Line in audio input, incarnate a fashionable portable speaker, and let music full your space at any time. Note: When using, turn the volume knob clockwise, and the power indicator light is green, indicating that the machine is TURN-ED ON. Continue to turn the volume knob clockwise to increase the volume of the loudspeaker; Otherwise, it will reduce the volume of portable speech until it is turned off. Connect the microphone to the microphone input socket on the amplifier, adjust the position of the microphone and the amplifier to a proper distance, and adjust the volume knob to achieve better sound amplification effect. Aux in: audio input port, which can be connected to the 3.5 plug sound source. Connect the 12V power adapter equipped with this machine to the charging socket of the amplifier, and connect the power to charge. When the battery is in the charging state, the charging indicator light is red; The charging light turns green when fully charged. Each charging time is about 4-6 hours. When the amplifier power indicator light is green, if you continue to use the machine, the portable speaker will automatically power off to protect the battery in the machine. The microphone microphone should face the mouth and be about 2cm away. Package Included: 1xLoudspeaker 1xHeadset 1xCharger 1xAudio cable 1xShoulder strap 1xManual