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The right three buttons are for mute, volume down, and volume up.
The front cover flips down to reveal the speaker and then rotates around to act as a support. The speaker turns off when you close the flap and it offers protection for the speaker. Above the speaker you can see a thin black area that contains the indicator lights detailed in my post.
Here you can see the flap under the speaker acting to support the speaker in its upright condition.