Sony MC-90 Microcassette, brand new and factory sealed. • 180 minutes total recording time (90 minutes per side) • Designed for voice recording and dictation • “Lifelike Voice Reproduction” quality • Compatible with most microcassette recorders • Made in Japan • Packaging is sealed and intact (see photos for details) Keywords: Sony microcassette, MC90 tape, voice recorder cassette, dictation tape, vintage audio, microcassette recorder tape, sealed cassette, Sony MC90, retro electronics