4. Hot Keys and Features
(1) Sound ON/OFF
You can turn the sound on/off by pressing and holding down the Zoom (+)
button and Brightness button for 2 seconds or more.
(2) Battery status
The status of the remaining battery power is not normally displayed, but the
indicator shows up when the battery power drops to 30 percent of full charge.
You can check the status of the remaining battery power by pressing the
Zoom (+) button and Color Mode button simultaneously for 2 seconds or more.
The indicator icon disappears if you press the buttons again in the same way.