Garnet SEELEVEL II 709-RVC Manual page 13

To check the primary/secondary mode:
1. Press and hold down the BATT button, the display will show
the battery voltage. While continuing to hold down the BATT
button, press and hold down the BLACK button. Continue to
hold down both buttons for about 5 seconds until the display
shows "Pri" for primary mode or "SEC" for secondary mode.
When viewing is complete, release both buttons to return to
normal operation.
To check the hardware and software revision:
1. Hardware and software updates may be periodically released
to add features. To check the hardware and software version
of the display, use the following procedure.
2. Press and hold down the BATT button, the display will show
the battery voltage. While continuing to hold down the BATT
button, press and hold down the FRESH button. Continue to
hold down both buttons for about 5 seconds until the display
shows a number such as "4.10", the first number is the
hardware version and the last two numbers are the software
version. When viewing is complete, release both buttons to
return to normal operation.
709-RVC Manual
Page 13