Sony PCM-D10 Operating Instructions Manual page 72

Changing the settings (continued)
Menu Item
Common Available Rec. Time
Settings
System Information
72
Settings (*: Default setting)
Indicates the remaining recordable time in the current recording
mode and the remaining capacity of the built-in memory and the
SD card.
You can check the system information, such as the linear PCM
recorder model name and the version number of the software.