Memorex 4.7GB DVD-R Media (10-Pack) DVD-R discs are compatible with home DVD recorders that support the DVD-R ( Minus-R ) format -- NOT recorders made for the DVD+R ( Plus-R ) format Compatible brands include Sony, Panasonic, Pioneer, Toshiba & Sharp -- but the list is by no means limited to these brands! Consult your drive's user guide before ordering -- discs available in both formats! Package includes ten discs