Buy Wireless Bluetooth Headphones Over Head Bass Headsets Acoustic Noise Cancelling Earphones-Jack and Jacob
* Internal and external microphones measure unwanted ambient noises, then circuitry in the headphones generates sound at a frequency that cancels out those noises to provide active noise cancellation.
* Three levels of world-class noise cancellation for better listening experience in any environment, just using the Action button to adjust the levels.
* Comes with high-quality built-in Microphone for hands-free calls, which sets your hands free. Connecting external devices (such as, MP3 / MP4, etc.) without BT function via 3.5 mm audio jack.
* With easy BT pairing, the rechargeable lithium-ion battery enables up to 20 hours of wireless music play time. You can keep the music going all day long.