DVD+RW, a rewritable disk format used mainly in video recorders and some data backup applications.
Standard disk capacity is 4.7Gb which can store 120 minutes of video in standard play mode, Longer or shorter storage times are dependant on the recording mode and machine used.
As with all optical media, keep the disk protected when not in use, avoid direct sunlight, do not drop, use the correct markers to write on the disk not a ball point or pencil, avoid dust and moisture store between -5 and 50 degrees Celsius, relative humidity 5-90%
