Active Noise Cancellation (ANC) cancels the noise you don’t want to hear; HearThrough (our word for transparency mode) lets in the sounds you do. With 11 levels of sound - from full ANC to full HearThrough – perfectly engineered for the way your ear perceives changes in volume, you’ll never miss a beat. The Elite 85t buds have been engineered with the most cutting-edge noise cancellation technology on the market, to give you complete control over how you hear the world around you. Fully adjustable HearThrough lets you choose how much of the outside world you want to let in using the handy slider, and then access that setting at the touch of a button. So when you need to hear what’s going on around you - like when you need to order a coffee – you can.