Urbanista PALO ALTO Adaptive Noise Cancelling Earphones (Dusk Purple)Up to 45 dB Adaptive Noise Cancelling Experience powerful sound, perfectly optimized to your surroundings. Palo Altos advanced Adaptive Noise Cancelling continually scans and adjusts to your surroundings, detecting and filtering out ambient noise to improve your audio experience. With up to 45 dB noise cancellation and ANC bandwidth extending up to 2500 Hz, Palo Alto offers a distraction free audio experience in any environment. Powerful, dynamic