PFD uses a 405 nm wavelength and a numerical aperture (NA) of 0.85 for the laser, allowing 23 GB of data to be stored on one 12 cm disc – the equivalent to nearly five single-layer DVDs, and a 1x speed data transfer rate of 88 Mbit/s for reading and 72 Mbit/s for writing.

However, Blu-ray discs currently allow a 2x data transfer rate of 72 Mbit/s – lower than PFD.

VAT) directly from Sony, and 23 GB write-once and re-writeable media retailed for £30 each.

Sony states that PDD and PFD media are not compatible,[citation needed] but does not specify the exact differences between products.

In a firmware and software upgrade in late July 2009, Sony added the ability for computer users to store any computer files on the Professional Disc into the dedicated "User Data" folder.