remote. Frequency response: 20 – 20,000 Hz Power Supply: one DC 1.5V (Rechargeable) AA Battery Available colors: Gold, Pink, Silver, Skeleton black, Blue Audio recording function and AM / FM radio. Memory expansion by Smart Media Cards. Critical reception The RIAA's Associate Director of Anti-Copyright infringement initially said the MPMan had "no function other than playing material that was stolen from record companies". Nevertheless, he later said it was "a unique device. It's something that we haven't seen on the market before". References Audiovisual introductions in 1998 Digital audio players South Korean inventions