Panasonic WV-U2500 Series Operating Instructions Manual page 61

Possible duration of stream images (H.265) that can be saved on the SD
memory card (as indications)
For possible duration of stream images (H.265) that can be saved on the SD memory card, refer to our website
below.
https://security.panasonic.com/training_support/support/info/ <Control No.: C0307>
2 Settings
Operating Instructions 61