![Amazon.com: Sennheiser HD 4.50 BTNC Bluetooth Wireless Headphones with Active Noise Cancellation, Black and Silver (Discontinued by Manufacturer) : Electronics Amazon.com: Sennheiser HD 4.50 BTNC Bluetooth Wireless Headphones with Active Noise Cancellation, Black and Silver (Discontinued by Manufacturer) : Electronics](https://m.media-amazon.com/images/I/51v9N5-cPvL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Sennheiser HD 4.50 BTNC Bluetooth Wireless Headphones with Active Noise Cancellation, Black and Silver (Discontinued by Manufacturer) : Electronics
![Sennheiser HD 4.50BTNC fresh out of the box and fast forward & rewind don't work. Am I missing something here? : r/sennheiser Sennheiser HD 4.50BTNC fresh out of the box and fast forward & rewind don't work. Am I missing something here? : r/sennheiser](https://i.redd.it/dwfgtkzxax041.jpg)
Sennheiser HD 4.50BTNC fresh out of the box and fast forward & rewind don't work. Am I missing something here? : r/sennheiser
![SENNHEISER SEBT4 HD 450SE 4.50BTNC Bluetooth Wireless Headphones with Active Noise Cancellation User Guide - Manuals+ SENNHEISER SEBT4 HD 450SE 4.50BTNC Bluetooth Wireless Headphones with Active Noise Cancellation User Guide - Manuals+](https://manuals.plus/wp-content/uploads/2021/12/SENNHEISER-SEBT4-HD-450SE-4.50BTNC-Bluetooth-Wireless-Headphones-with-Active-Noise-Cancellation-SENNHEISER-SEBT4-HD-450SE-4.50BTNC-Bluetooth-Wireless-Headphones-with-Active-Noise-Cancellation.png?ezimgfmt=rs:368x425/rscb1/ngcb1/notWebP)