Instruction manual
Table Of Contents
- Important safety instructions
- Package contents
- Product overview
- Getting started
- Using the headphones
- Information on the rechargeable battery and the charging process
- Charging the headphones' rechargeable battery
- Connecting the headphones to a Bluetooth device
- Information on the Bluetooth wireless connection
- Pairing the headphones with a Bluetooth device
- Disconnecting the headphones from a Bluetooth device
- Installing the Smart Control app
- Switching the headphones on
- Switching the headphones off
- Putting the headphones on and adjusting the headband
- Retrieving information on the battery charge status
- Adjusting the volume
- Information on active noise cancellation ANC
- Activating/deactivating the active noise cancellation ANC
- Listening to music using the headphones
- Controlling music playback
- Making phone calls using the headphones
- Using the voice assistant/voice dialing
- Using Amazon Alexa as voice assistant
- Adjusting sound effects/the equalizer
- Using the audio cable/activating flight mode
- Connecting the headphones using the audio cable
- Storing and transporting the headphones
- Care and maintenance
- FAQ/If a problem occurs ...
- Specifications
- Manufacturer Declarations
Using the headphones
HD 450SE | 15
Disconnecting the headphones from a
Bluetooth device
▷ Via the menu of your Bluetooth device, disconnect the connection
to the headphones.
The headphones are disconnected from the Bluetooth device.
You hear the voice prompt “Lost connection”. The headphones
switch to standby mode.
Installing the Smart Control app
To make full use of all the settings and functions of the headphones,
you need to have the free Sennheiser Smart Control app installed on
your smartphone.
Download the app from the App Store or Google Play and install it on
your smartphone. Alternatively, you can use your smartphone to
scan the following QR code or to call up the following Internet site:
www.sennheiser.com/smartcontrol
▷ Connect your smartphone to the headphones via Bluetooth (> 12).
▷ Start the Smart Control app.
▷ Follow the instructions in the app.
The Smart Control app recognizes the headphones and activates
all available settings and functions.
To delete the Bluetooth pairing list of the headphones, > 31.
For further functions of the headphones, you require the apps
of the respective manufacturers:
• Amazon Alexa app (> 25)
“Sennheiser Smart Control”