Lightweight, portable design stores easily when not in use. Convenient 3ft. (0.91m) cord keeps your player within easy reach. Spring-loaded Cassette head maintains solid contact with your Cassette Tape player's head for clear sound. Spring-loaded Cassette head which maintains solid contact with your Cassette Tape player’s head and an improved Cassette head mechanism for better sound. No matter how old your car is, you can still enjoy your music your way with the Monster Cassette adapter 800. Just Pop it into your car's Cassette player and Plug it into your portable device.