The QGD170ME ushers in the next generation of metal evaporated products. 20GB Native Capacity (40GB Compressed). SONY High Density alloy metal particles result in lower error counts and high archival stability. SONY High Cross-Linkage help maintain performance through up to 1 500 passes. Heavy-Duty lid mechanism is tested to over 10 000 openings and closings for long life. Heat resistant shell withstands high temperature. Anti-Static shell attracts less dust and helps maintain low error rates. Tough Polypropylene storage cases for storing your valuable data in a dust-free environment. Diamond hard carbon coating for usurpassed durability.