they are definetly 16x media ,I have quite a few of them
Disc Information:
Status: Empty
Erasable: No
Free Sectors: 2,295,104
Free Space: 4,700,372,992 bytes
Free Time: 510:03:29 (MM:SS:FF)
Supported Write Speeds: 2.4x, 4x, 6x, 8x, 12x, 16x
Physical Format Information (ADIP):
Disc ID: MCC-004-00
Book Type: DVD+R