The Panasonic Professional Quality 63-minute mini DV tape (PQUS) has same high quality tape that's available in the popular PQ series but with improved shell and case. The PQUS has a precision engineered cassette shell molded of ABS resin, which prevents warping and provides tough impact resistance and durability. The anti-static cassette lid treatment of the PQUS repels dust, debris and contaminants, minimizing dropouts. The sliding lock mechanism prevents against accidental erasure of recordings. The Panasonic PQUS case is made of a soft material that won't break if it's dropped. The 2-way lid construction allows you to easily extract the tape with one hand, even while shooting.