Sennheiser hd 4.50BTNC

The Sennheiser HD 4.50 BTNC is a wireless over-ear headphone with active noise cancellation (ANC), Bluetooth 4.0 (aptX), and up to 19 hours of battery life with ANC on. It delivers clear sound with a frequency range of 18 Hz – 22,000 Hz and features a built-in microphone for calls. The headphones are foldable, lightweight (238g), and include a 3.5mm wired option. Controls for volume, playback, and ANC are on the earcups. While it offers good sound quality and effective noise cancellation, it use