Description Each disc is rewritable up to 1000 times. Easy to write on for faster labeling. Leave disc open to add data, or close it to make data permanent. Warranty: Manufacturer's limited one-year warranty. Warning: WARNING: This product can expose you to Bisphenol A (BPA), which is known to the State of California to cause Birth Defect/Reproductive Harm. For more information go to www.P65Warnings.ca.gov.