Small size, light in weight, easy to carry The noise reduction function, bring clearer sound, with good amplification effect Support TF card and U disk playback (card not included) Using 12W high-power speakers, the sound covers a wide range, suitable for indoor and outdoor Built-in high-capacity lithium battery provides up to 12 hours of working time Note: In order to achieve the best amplification effect, place the microphone head 1cm in front of the mouth and speak into the microphone head If there is a whistling sound, please turn down the volume, and then pull the machine and the microphone away to prevent interference It is recommended to charge it after use. If it is not used for a long time, it should be charged once a week when it is used again Specification: Output power: 12W Charging voltage: DC 5V 1A Frequency Response: 50Hz-15000Hz Working temperature: -10℃-45℃ Use time: 12 hours (volume at 60 percent ) Charging time: 4 hours Battery capacity: 1200mAh Size: 88x88x42mm Net weight: 232g Supported memory card capacity: up to 32GB (card not included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.