AirPods 4 headphones - the fourth version with noise cancellation feature

Active noise cancellation feature and adaptive sound feature and transparency sound mode Personalized spatial sound with dynamic head tracking feature Sound isolation mode and "Hey Siri" feature and Siri interactions Listening time up to 5 hours on a single charge (up to 4 hours with active noise cancellation enabled) Listening time up to 30 hours (up to 20 hours with active noise cancellation enabled), using the case Wireless charging case (USB-C) with speaker for location feature Dust, sweat, and water resistance