• Easy to transport and set up, this is a wireless microphone speaker set Since it is an integrated amplifier, you can use it simply by turning on the power and connecting the microphone • With a maximum output of 40W, the sound can reach an indoor area of approximately 180 to 200 square meters This megaphone speaker is ideal for use in office meetings, school conference rooms, and community centers ※These are approximate values It may vary depending on the environment and noise levels ) • Includes 2 wireless microphones so you can speak freely while moving around It uses the B-band and allows you to select 1 wave from 10 waves for use If frequencies overlap, it is easy to change them • The microphone input jacks are equipped with two standard 6.3mm jacks You can add up to two additional wired microphones (400-SP045) sold separately Can connect up to 2 wireless microphones and 2 wired microphones, allowing a maximum of 4 people to speak • You can connect a smartphone or CD player, etc. to the external audio input terminal (RCA jack) to play music It can also output along with microphone voice You can use it as a karaoke speaker or stream announcements with BGM at your wedding reception or party