The TDK D90 Standard Audio Cassette is a single unit cassette tape with a capacity of 90 minutes. It is designed for recording with normal bias, offering Superior Normal Bias IEC I / Type I performance with a signal-to-noise ratio of 60dB (A5). This cassette comes in a Jewel Case packaging and is suitable for use in various audio recording devices. Made in Thailand, this TDK cassette is a reliable choice for recording and storing audio content.