Sennheiser HD 4.50 BTNC Owner's Manual
HD 4.50BTNC
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Using the headphones
Using the headphones
Switching the headphones on
WARNING
Danger due to high volume levels!
Listening at high volume levels for long periods of time can lead to
permanent hearing defects.
permanent hearing defects.
X
Before putting the headphones on, set the volume to a low level.
X
Do not continuously expose yourself to high volume levels.
X
Press the power button for 2 seconds.
You hear the voice prompts “power on” and “connected” and the LED flashes
blue 3 times.
You hear the voice prompts “power on” and “connected” and the LED flashes
blue 3 times.
2s
› connected ‹
› power on ‹
Switching the headphones off
X
Press the power button for 2 seconds.
You hear the voice prompt “power off” and the LED flashes red 3 times.
You hear the voice prompt “power off” and the LED flashes red 3 times.
2s
› power off ‹