Sony’s MDR line of Bluetooth headphones sold like gangbusters during Deals Week, but if you were holding out for noise cancelling models, Amazon’s rewarding your patience today with a $50 discount on the top-of the line MDR100x.

These headphones have all the features you’d expect in a good pair of Bluetooth headphones these days: NFC pairing, 20+ hour battery life, and even LDAC Hi-Res audio compatibility. But the secret sauce here is noise cancellation, including a special mode that lets ambient voices through either at all times, or just when you cup a hand over the right earcup. $348's still a pretty penny, but it’s the largest discount Amazon’s ever listed on this model in its 6+ months of existence.