Excellent condition Panasonic wireless microphone WX-4100B. Used a few times after being purchased new. Operation has been confirmed and there are no problems. As a bonus, I will include new Panasonic batteries. I will carefully pack and ship it. Immediate purchase is OK. If you have any questions, please comment. This is an 800MHz band speech wireless hand microphone. It uses an electret condenser microphone unit, delivering clear sound in meetings and lectures. The feature of this microphone is that "anyone can use it intuitively and easily." The size and weight are easy for both adults and children to use, the power switch is easy to understand, and it is highly stable, so it is used in many facilities and schools. ● Uses a high-clarity electret condenser microphone unit. ● Acoustic antibacterial urethane is used inside the net to reduce mold and fungi. ● Transmission frequency: 806.125 MHz to 809.750 MHz (30 waves at 0.125 MHz intervals) 【Condition】 ● Used item. ● Power is on, and I confirmed that sound is produced by a microphone test. ● Compatible with the new spurious emission standard. 【Please note】 A wireless microphone requires a receiver that supports the frequency. It cannot be operated with only the microphone and speaker. Please prepare a receiver that supports the frequency. Thank you for viewing. It can be used without any problems, but for the sake of preventing replacement, please understand that it is 3N (no returns, no refunds, no exchanges). (^_^) If you have any questions, please comment.