Features: Experience superior sound clarity with our quality blank cassette tape, crafted from ABS materials to ensure stable audios performances,for educational and professional recording needs. The transparency casing design allows users to easily monitors tape usage, providing a practical and intuitively solution for managing your recordings. Perfect for educators, students, and professionals who require reliable recording tools for lectures, interviews, and classroom. Design for versatility, this cassette is compatible for most traditional tape recorders and portable players, making it suitable for various recording environment. Available in multiple lengths:30, 45, 60, and 90minutes;this compactly and lightweight cassette offer flexible option to meet diverses recording demands, ensuring you have the right tool for every occasion. Specifications: Component:ABS Size:Approx.10.5x6.7cm/4.13x2.64inch Recording Time:30Minute,45Minute,60Minute,90Minute;(Optional) Package Includes: 1pc Blank Tape note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.