This is a very hard to find SD card that is necessary on older Panasonic camcorders such as the SV-AV100 in order to record MPEG2 (Higher Quality) video vs the MPEG4 format.

These cards were released in the early 2000's, in High Speed, Super High Speed, and Pro High Speed formats.

Tested working in MPEG2 mode on an SV-AV100 for 21 minutes of record time.

Great condition, these are the last of their kind, and are extinct. 

Grab them before they're gone!