Special Features:

Duration is 2, 4 or6 hours depending upon the play speed set; the three speeds are standard, long, and extended play

Properties:

A thin flexible strip of nonmagnetic material with a magnetized coating upon which optic variations or optic and sonic variations are recorded by magnetic means. May be in roll form or encased in a cartridge or cassette. Excludes tape, sound recording; and tape, electronic data processing.