Sennheiser HD 450SE Instruction Manual page 36

Manufacturer Declarations
36 | HD 450SE
aptX is a trademark of Qualcomm Technologies International, Ltd.,
registered in the United States and other countries, used with per-
mission.
Amazon, Alexa and all related logos are trademarks of Amazon.com,
Inc. or its affiliates.
Other product and company names mentioned in the user documen-
tation may be the trademarks or registered trademarks of their
respective holders.