'No Need to Carpool' Cardboard Karaoke Set with Induction Speaker and Magnifying Screen and Microphone. Magically amplifies the sound from your mobile phone. With magnifying screen to maximize your video experience. First find some Karaoke songs with lyrics on your mobile phone. Simply insert your mobile phone into the Karaoke Set on the suction pad, switch on the speaker, plug in the microphone and you're ready to go. Let's go Karaoke! Cardboard Karaoke Set product size 7.87 x 4.21 x 7.08 inches. Microphone product size 6.69 x 1.77 x 1.77 inches.