Kidzlane CD Player Karaoke Machine with Anti-skip Protection Kids Sing Along Karaoke Machine, CD-MP3 player & USB flash drive port, could also play WMA audio format, (UBS can only read a flash drive not from an iPod) Anti-Skip protection, 3 digit LED display, High output speaker sound system Fully programmable, choose your desired tracks, random play, intro play, repeat play 2 Karaoke Microphones with ON/OFF switch & a separate microphone volume control knob Included: 9V Power Adapter ($15.00 value), Line-in jack to connect it to your smart phone. Option to use 6 "C" Batteries if want to operate on battery (batteries not included)