This is a TEAC cassette tape. I found it today and bought it, although I don't remember buying it. After a general inspection, it appears to be unused. It rotates smoothly. Please understand that the case has no brand markings! I haven't listened to it completely, as I'm worried about overusing it. It uses a Maxell tape and a newly developed aluminum-magnesium alloy reel! It's a normal tape. The fact that you can't see the tape is innovative! Since I used Maxell tapes, maybe this came with the TEAC tape deck I bought. Rare. Conversely, I can't check if it's new!