Nintendo Switch Red and Blue Wired Microphones 2-Piece Karaoke Set Purchased for karaoke on the Switch, used once. Selling because I no longer have the opportunity to use it. It worked when I used it six months ago. Thank you for your understanding. Red and blue wired microphones, USB connection, with on/off switch. - Color: Red, Blue - Type: Wired microphone - Connection: USB connection - Switch: On/Off switch Thank you for viewing.