Myron&Davis NV8ACC1 - Manual (Page 11)

Press once to enter night mode, press twice
to enter black screen mode.
(No standby operation)
Bluetooth hands free microphone
In GPS mode, press to exit from GPS.
Press to switch to DVD mode, press
repeatedly to switch between DVD/SD/ USB.
Press to access main menu of setup
SD card port for reading
multi-media
Connects to portable hard disc
Insert probe to reset the unit to
original factory settings
Eject / Load button in DVD mode.
In Factory CD mode, press to
switch to DVD mode.