HD 450SE

Never miss a beat. Sennheiser’s HD 450SE is a Bluetooth headset that delivers great wireless sound and keeps you effortlessly connected with Amazon Alexa. It offers exceptional versatility for audio lovers with superior sound quality with deep dynamic bass, active noise cancellation and advanced Bluetooth technology. With an excellent 30-hour battery life and Alexa just a touch away, you’ll never miss a thing whether at home or on the move.

Article No. 509280

Never miss a beat

Experience superior wireless sound with deep dynamic bass and stay effortlessly connected with Amazon Alexa.

The Sennheiser HD Series ‒ your audio companion for every need!

Crafted from high-quality materials, the robust and stylish HD models offer an exceptional combination of versatility and superior sound. At home while listening to a podcast or on the go with your favorite song, you can count on the new HD series to be your ultimate companion for wireless audio – whatever you listen to.

Superior sound without distractions

The HD 450SE features Sennheiser’s active noise cancellation and a closed back design that lets you enjoy superior sound experience without distractions – even in loud environments. Its exceptional wireless sound can be enjoyed in full thanks to high-quality wireless codec support, including AAC and AptXTM, while AptXTM Low Latency keeps audio perfectly in sync with video.

Superior sound without distractions

Experience effortless connection

The HD 450SE keeps you effortlessly connected, thanks to Bluetooth 5.0 support and a dedicated Voice Assistant button for at a touch voice interaction with Alexa, Siri or Google Assistant. Control over music and calls is just as intuitive via dedicated buttons on the earcups.

Experience effortless connection

Your sound, your way

You want it? You got it. It’s easy to find your perfect sound with the Sennheiser Smart Control App. Keep things neutral or turn up the bass – simply tailor the sound via its intuitive equalizer. Sennheiser Smart Control also offers access to battery status, a Quick Guide for further tips, and allows for easy firmware updates. There’s also a useful podcast mode to boost the clarity of speech when enjoying podcasts, audio books and other speech content.

Your sound, your way

Ready for any journey

With an excellent 30-hour battery life, fast USB-C charging and a compact folding design, the new HD 450SE is an ideal travel companion. With a sleek black finish, it has been crafted from high-quality materials for an ideal combination of discrete minimalist style, ergonomic comfort and take-anywhere durability.
The HD 450SE is supplied with an additional audio cable for optional wired listening and a carry case is for convenient storage.

Ready for any journey


Sennheiser Smart Control is a free app and compatible with most iOS and Android systems.
This app is available in 8 languages including German, English, French, Spanish, Russian, Korean, Japanese and Mandarin.

Version 8.0 and up
Get it on Google PlayAndroid, Google Play and the Google Play logo are trademarks of Google LLC.
Version 13.0 and up
Download on the App StoreApple, the Apple logo and iPhone are trademarks of Apple Inc., registered in the U.S. and other countries and regions. App Store is a service mark of Apple Inc.

What's in the box?

  • HD 450SE Wireless Headphones
  • Audio Cable
  • USB-C Charging Cable
  • Carry Case
  • Quick Guide
  • Safety Guide

Technical Data

  • Frequency response (Microphone)
    80 Hz to 8,000 Hz
  • Bluetooth Version
    Bluetooth 5.0 compatible, class 1, BLE
  • Supported Profiles
  • Charging time
    Approx. 2 hrs
  • Storage temperature
    storage: -20 to +70°C
  • Operating temperature
    Operation: 0 to +40°C, charging: +10ºC to +40 ºC
  • Modulation
    GFSK, π/4 DQPSK, 8DPSK
  • Transmission frequency
    2,402 MHz to 2,480 MHz
  • Operating relative humidity
    Operation: 10 to 80%, non-condensing, storage: 10 to 90%
  • Microphone
  • Frequency response
    18 Hz to 22,000 Hz (-10 dB)
  • Sound pressure level (SPL)
    108 dB (1 kHz/0 dBFS)
  • THD, total harmonic distortion
    < 0.3 %
  • Ear coupling
    Around ear
  • Transducer principle
    dynamic, closed
  • Weight
    Approx. 238 g
  • Pick-up pattern
    Dual Beamforming
  • Power supply
    Built-in Lithium-Polymer rechargeable battery: 3.7 V ⎓, 600mAh; USB charging: 5 V ⎓, 500 mA max.
  • Operating time
    30 hours music playback via Bluetooth with ANC activated


  • Instruction Manual
    • Instruction manual HD 450SE (5.3 MB) Download

    • Online instrction manual HD 450SE Download

  • Quick Guides
  • Safety instructions and regulatory information