C-84 TDK SA High Bias Cobalt Transparent Cassettes

Authentic Made in Japan TDK SA High Bias Audio cassettes in a transparent tabs in, Type 1 (normal) sonic cassette shell

To record properly on these cassettes, you must have a Type II (aka Chrome, High Bias, SX) bias selector button on your cassette recorder, as well as independant EQ selector buttons. They're best for recorders made before the 1990s. 

Total length: 84 minutes (42 per side) approx