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Volume
• Press the key to increase listening volume by one step.
• Press and hold the key to increase listening volume continuously.
• Press the key to decrease listening volume by one step.
• Press and hold the key to decrease listening volume continuously.
In Bluetooth mode, the multicolored LEDs turn blue for two seconds to indicate the volume level. The
more blue LEDs displayed, the higher the volume level.
In USB mode, the multicolored LEDs turn green for two seconds to indicate the volume level. The
more green LEDs displayed, the higher the volume level.
The speakerphone will synchronize playback volume with a USB-connected Windows PC, or a
Bluetooth-connected iPhone or Android phone (model dependent).
The speakerphone will synchronize phone call audio volume with a Bluetooth-connected iPhone or
Android phone.
Mute
• Press the key to mute all the microphones.
• Press the key again to unmute all the microphones.
• Press the key while the speakerphone is ringing to temporarily mute the ringing tone.
Activate Google Assistant, Siri or Bixby on the mobile device
• When the speakerphone is idle, press and hold the key for at least two seconds.
Connecting a headset
To ensure privacy during a phone call, you can connect a headset to the 3.5mm jack of the
speakerphone. The audio will be played through the headset.
Charging
To charge the battery of your speakerphone:
1. Plug the USB cable in the USB type-C port on the speakerphone
2. Plug the other end of the USB cable in the USB type-A port of a power source (for example, a
Windows PC).
While charging, the power LED indicator ashes white.
If the power LED indicator is red, the battery is charging but the battery level is too low for the
speakerphone to power up.
To charge an external device using the speakerphone battery:
1. Plug the USB cable in the USB type-A port of the speakerphone.
2. Plug the other end of the USB cable in the USB type-C port of the external device.
NOTE: The speakerphone must be on and the battery must not be low.
You can charge the battery of your speakerphone (USB type-C port) and charge an
external device using the speakerphone battery (USB type-A port) at the same time.
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