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Opening hours:
Monday till Saturday 8.00 to 20.00


  • Calls in premium HD sound quality
  • Compatible with hearing aids
  • Ecomode plus: no radiation during stand-by
  • Compatible with all Swisscom Internet-Boxes

The Swisscom Gigaset Comfort 551HX HD-Phone allows you to enjoy all the benefits of fixed network telephony (IP). Easy to use thanks to its large colour display with illuminated buttons.
Award-winning design: iF Design Award 2022
Many older people like this phone due to its large display and hearing aid compatibility. The Gigaset Comfort 551HX HD-Phone works exclusively with a fixed network connection (IP) to the Swisscom Internet-Box or Swisscom Centro Business 2.0 router.

Telephone-specific functions

  • Compatible with hearing aids
  • Large high-definition colour display
  • You can connect up to 5 HD-Phones to the Internet-Box or the Centro Business 2.0
  • Automatic software update
  • Calendar function
  • Alarm clock
  • Babyphone
  • Headset port 3.5 mm jack

Please note: does not support the Centro Business 1.0 router.

You can send ordered items back by post in the original, sealed and unopened packaging within 14 days, free of charge. It is not possible to return items if the original packaging has been opened or is no longer sealed, or if the 14-day period has expired.

Do you have any questions?

Sales Hotline

0800 555 155    
Mo–Sa 8.00–20.00

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