The Rocketfish RF-NCHP01 headphones make up a wired over-the-head stereo headset that can be used for multiple purposes including communicating over the Internet with a personal computer. The unit is compatible with PC and Mac computers. The Rocketfish headphones require a minimum frequency response of 20 Hz and a maximum frequency response of 20 kHz. Sensitivity for the unit is 100 dB with an impedance of 100 Ohms when passive and 590 Ohms when active. The unit is sound-isolating, and this results in reduction of background and ambient noises. The Rocketfish RF-NCHP01 headphones use an over-the-head design for head placement that is more secure. The wired headphones include an adjustable hard plastic headband that can accommodate different head sizes. The ear pieces in the Rocketfish headphones are made of foam with leatherette material wrapping, and they each include a speaker at center placement. The wired headphones sit over the ears, thereby helping to eliminate external sounds. The Rocketfish headphones have a Neodymium magnet, 4.9-foot cord, internal power source, USB plug connectivity, and an airline adapter. The unit measures 7.5 inches high by 7.5 inches wide by 3.5 inches deep and weighs 9 oz.