Hard disk storage:20G/40G/60G/80G. Hard disk?s heat insertion and extraction all adopt metal mechanism Insert Ads:including play through memory and automatically TFT documents deleting Language:English, Chinese, Chinese F Built-in professional Karaoke circuit Slap-up radio function Super bass output Compatible with DIVX/MP4/DVD/VCD/CD/MP3/JPEG etc. Encoder volume control Outside the entire heat insulation sets at the radiation design 4?45 Watt Power Output ISO-DIN Mounting