The upgraded H2 chip powers smarter noise cancellation and three-dimensional sound. Adaptive EQ tunes music to your ears in real time to deliver crisp, clean high notes and deep, rich bass in stunning clarity. Active Noise Cancellation now cancels twice as much unwanted sound, so nothing interrupts your listening during a commute or when you need to focus.¹ And Adaptive Transparency filters and adjusts the intensity of loud noises at 48,000 times per second, so you can comfortably stay connected to the world in any setting. Now you can enjoy up to 6 hours of listening time on a single charge, and up to 30 hours of listening time with the MagSafe Charging Case.ººº And wireless charging is a snap. Simply place the case on an Apple Watch charger or a MagSafe charger.