HD-HYNUDAL&reg; Online Singing Machine Karaoke Converter + 2 Condenser Microphones for MID,PC,Laptop,iPad,DVD Stylish appearance, solid and reliable YAMAHA chipset, perfect sound quality, pure tone Support PC/DVD/MID/Mobile phone and other audio input porthaving a wide use. Stable performance , Working long time sustainably Working hoursUnlimitedturn off the power when rest