Sony SRS-X99 Help Manual page 192

Help Guide
How to Use
Personal Audio System
SRS-X99
Parts and controls (Main unit)
Front and top side
After turning the speaker on, hold your hand above the top panel. The backlight lights up and the function buttons (No.7
to No.11) are displayed. Buttons will be turned off when there is no operation for about 20 minutes or more.
How to display the function buttons
Place your hand as illustrated below to display the function buttons. To display quickly, touch the center of the top panel.
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