OKAYO 2.4GHz Digital Wireless Compact Speaker (Maximum 60W) (Built-in 2-wave wireless tuner, built-in lithium ion) [Can also be used for disaster

Perfect for meetings, events, nursing homes, kindergartens, culture schools, and recreation! For universities, high schools, junior high schools, elementary schools, kindergartens, community centers, assembly halls, corporations, and various organizations. We have a track record of implementation in companies. Portable! 2.4GHz digital wireless speaker set. - Since it is a digital 2.4GHz band, there is no interference with the 800MHz and 300MHz bands! This product is certified to comply with technical standards stipulated by the Radio Law. One wireless hand microphone included. Equipped with wired microphone input, LINE IN/OUT, and microphone mute function. Built-in 2-wave wireless tuner (2 microphones can be used at the same time by adding one microphone sold separately) BGM can be played as an audio file from USB memory or SD card. You can play music from your smartphone or tablet using Bluetooth. Built-in Li-ion: 14.8V 5200mAh 76.96Wh