This is a multifunctional portable loudspeaker with sound-amplifying, digital music playing function. high-power amplifier chip and advanced off-fidelity amplifier master control.Using high-power speakers, this sound effect is clear and loud, covering a wide range of transmission.High capacity, high safety, class A 18650 lithium battery.Output power: 12WCharging voltage: DC 5V 1AFrequency response: 50Hz-15000HzWorking temperature:-10~45Use of amplification:12Hours(The volume is 60%)Charging time: 4 HoursBattery capacity: 1200mahExpanded memory: 32GB (maximum support)Note:1. In order to achieve the best sound amplification, place the microphone head 1cm in front of the mouth and speak at the microphone head;2. If there is a howling, turn down the volume and pull the machine and the microphone to prevent interference;3. It is recommended to charge the battery after using up. If it is not used for a long time, it should be a week.Colour:blackMaterial:ABSSize:88 x 88 x 42mmPackage Contents:1 x Voice 1 x Wired Microphone Headset1 x Waistband1 x USB CableOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.