Ridata DVD-RW 4x 50-pack Spindle 50 rewriteable DVD-RW discs on a plastic spindle with dust cover 4.7 GB per disc; stores up to 120 minutes of DVD-quality video For use with 4x speed recording (maximum); re-write up to 1,000 times Highly compatible--can be played in most DVD players and DVD-ROM drives after recording and finalized Not compatible with DVD+R/RW only drives (unless otherwise noted)