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
Package contents
HD 450SE | 5
Package contents
Online you can find:
• this detailed instruction manual and additional information
www.sennheiser.com/download
• the Sennheiser Smart Control app for configuring the head-
phones and for additional functions www.sennheiser.com/smart-
control
HD 450SE around-ear headphones
Model: SEBT4
USB charging cable with USB-C and USB-A connec-
tor
Analog audio cable with 3.5 mm jack plug and 2.5 mm
jack plug, length approx. 1.5 m
Carry case
Quick guide
Safety guide
A list of accessories can be found on the HD 450SE product
page at
www.sennheiser.com. Contact your local Sennheiser
partner: www.sennheiser.com/service-support.