60 min audio cassette, based on legendary SM900 formula
• Width: 3,81mm
• Length: 87.5m
• Recording time: 60min max
• Clear 5-screws tabs-in RTM cassette shell
• Base film: Polyester
• Base film thickness: 12 µm
• Coating thickness: 5 µm
• Total thickness: 17 µm
• Coercivity: 370 Oe
• Saturation retentivity: 1480 G
• Oxide: Fe2O3