Verbatim's professional optical media feature tighter specifications than the standards given by the relevant standardisation bodies. Tighter specifications ensure better compatibility with writers and recorders. This results in higher recording quality, thus ensuring longer archival lifetime and better readability. You can recognise Verbatim's professional optical media by the DataLifePlus branding. This is a recordable disc with 25GB capacity compliant with Blu-ray Disc Alliance specifications. Laser Wavelength: 405nm. Hard Coat protective layer. Extremely long archival life. Excellent playback performance. BD-R is for use in BD writers and recorders.