Review on Sennheiser HD 4.50 BTNC Bluetooth Wireless Headphones Featuring Active Noise Cancellation in Black and Silver by Wei-Yin Chang ᠌

These Bluetooth headphones can work in one of two modes - the headphones themselves (only playing sound) or in headset mode (that is, both playback and microphone). When connected to a Windows 8 computer, you will directly see two devices called HD450 in the system - one "headphones", the other "handsfree". Why is this important: 1. in headset mode, the quality of the sound played into the ears is noticeably and very significantly reduced - for Skype / zoom chatting it will do, but for computer games or music it will lead to disappointment. 2. for normal operation in headset mode, the device to which we connect the headphones must have support for bluetooth version 5 - a device with bluetooth version 4 will have problems with the microphone volume (you hear well, but you can barely hear, and nothing with it cannot be done). 3. In the headset mode, the sound from the microphone is also sent to the headphones, i. E. you will hear yourself and everything around you - talking in the subway or in a noisy room will not work! In the "only headphones" mode, there are no problems, the noise reduction works fine, and the sound quality is decent.