It's the most compact professional digital video recording media -- the DVCAM format -- yours with Sony quality in PDV Series videocassettes. Additionally, DVCAM Master videocassettes, thanks to higher C/N ratio and stability, are not just for standard recording or editing but for critical applications where its +2db higher output and improved durability, even at a 4 times high speed transfer mode, count. Sony's advanced evaporated tape makes 184-minute digital video recording possible with a pure cobalt evaporated coating for packing at high-density. DLC (Diamond Like Carbon) protective layer for extra durability. High dimensional precision for compatibility by reducing tape-shrinkage over time to about 1/2 that of consumer DV tape. Standard DVCAM line-up consists of PDV-ME Series cassettes with built in 16 kilobit IC memory PDV-N Series without IC memory. DVCAM Master lineup consists of PDV-MEM Series cassettes also with built in 16 kilobit IC memory. New protective locking album case specifically designed for DVCAM cassettes.