Alexa, that sounds incredible Experience great wireless sound and stay effortlessly connected using Amazon Alexa with the Sennheiser HD 450SE. With Buetooth 5.0, active noise cancellation and high-quality wireless codec support including AAC, AptX and AptX Low Latency the HD 450SE deliver superior sound qualilty with deep dynamic bass. Advanced features include Alexa interaction, customization via the Sennheiser Smart Control App, a special podcast mode, and 30-hour battery life to deliver exceptional performance and versatility for audio lovers.