Noise cancellation with active and passive reduction - Lightweight design with quality sound Noise cancellation Control your environment by setting the levels of noise cancellation, so that you only have to listen to as much of your surroundings as you want. If you're commuting, you can block everything out, but if you're out for a jog, you can let in background noise so you don't miss anything. Featuring active noise reduction, the Bose QuietControl 30 Headphones constantly measure and react to noise, produces an equal and opposite signal to cancel any external sound. The ear tips also form a seal in your ear for gentle passive noise reduction, so that you can focus in on your music or podcast. Lightweight design The lightweight neckband design conforms to your body for all-day comfort with a soft and comfortable finish, while the Bluetooth connection keeps un-necessary wires out of your way. Delivering consistent, balanced sound no matter the volume, the QC 30 Headphones are perfect for enjoying your favourite songs without sacrificing on quality. And with an inline microphone and controls, you can easily control your music and take calls without having to reach for your device. With a water and sweat proof finish, you never have to worry about your QC30 Headphones, even if you're having an active day.