PATENTED DUAL-SPEAKER DESIGN IN EACH EARCUP; 30MM NEODYMIUM DRIVERS FOR LEFT/RIGHT CHANNELS 40MM NEODYMIUM DRIVERS FOR SUBWOOFERS; FREQ RESP: 20 HZ - 20 KHZ;ONE-BUTTON PAIRING TO 2.4GHZ DIGITAL TRANSMITTER; UNCOMPRESSED CD-QUALITY AUDIO; BATTERY LIFE: UP TO 5 HOURS BETWEEN CHARGES; OMNI-DIRECTIONAL 2.4GHZ DIGITAL BROADCAST WIRELESS TRANSMITTER; EFFECTIVE TRANSMITTING RANGE: UP TO 100 FEET; 3.5MM STEREO JACK