Sennheiser HD 450BT Wireless Headphones, with active noise cancellation, Black

Active noise cancellation for uninterrupted listening pleasure: the closed back design delivers high quality audio even in loud environments Sennheiser Smart Control app support with equalizer, podcast mode and firmware updates Optimal wireless sound with deep dynamic bass and high quality codec support including ACC and AptX Low Latency Reliable partner on the move: always stay connected with 30 hours of music playback with ANC activated and short charging time of 2 hours; Smart Control app support with equalizer, podcast mode and firmware updates