magnetic tape based audio storage medium introduced by Olympus in 1969
is an audio storage
medium introduced by Olympus
. See the microcassette
article in Wikipedia.
A microcassette and compact audio cassette.
A normal and metal microcassette.
Three devices which use microcassettes and a pre-recorded metal microcassette tape.
Clockwise from top left: the Shogun "Music Muff" PB-1, the Olympus SR11 and the Sony M-670V.