SEALED - Sennheiser HD 450SE Bluetooth 5.0 Wireless Headphones.

Sennheiser HD 450SE Bluetooth 5.0 Wireless Headphone with Alexa Built-in - Active Noise Cancellation, 30-Hour Battery Life, USB-C Fast Charging, Foldable - Black

Bluetooth 5. 0 technology for effortlessly reliable connectivity including AAC and AptX Low Latency codec support
Active noise cancellation for uninterrupted listening pleasure
30-hour battery life with USB-C fast charging
Intuitive controls including Virtual Assistant button for Alexa, Siri and Google Assistant
Sennheiser App support providing an equalizer, Podcast Mode and Firmware updates

Active Noise Cancellation
Superior Sound
Perfect Travel Companion
Personalize Your Sound

Besides battery status and firmware updates, the app features a podcast mode that optimizes podcasts'' intelligibility, audiobooks, and other speech content.