The Verbatim DVD-RW 4.7GB 4X Recordable Disc (Spindle Pack of 30) is a rewritable disc with 4.7GB of storage capacity or 120 minutes of DVD quality recording time. It is re-recordable up to 1000 times. It has up to a 4x write speed. The disc utilizes SERL (Super Eutectic Recording Layer) which minimizes noise during write/rewrite cycles and provides superior archival stability.