The Radio Shack 3.5mm Lightweight Headphones are a vintage pair of over-the-ear wired headphones in black color. Made in the 1900s by RadioShack, these headphones feature an adjustable headband, stereo sound, and a 4ft cable length. With a frequency range of 20-20,000Hz and an impedance of 32 ohm, these headphones are a classic addition to any vintage audio collection.