The AirPods 4 feature a redesigned ergonomic shape for a more comfortable fit and clearer sound output. Apple added improved microphones for better voice calls, Personalized Spatial Audio for immersive listening, and seamless pairing across Apple devices. The earbuds are sweat and water resistant, making them suitable for workouts and outdoor use. The charging case now uses a USB-C port, making charging easier with modern cables and adapters. The AirPods 4 are optimized for the Apple ecosystem but also work with Android and other Bluetooth devices with limited features. Box Items: AirPods 4 earbuds USB-C Charging Case User documentation/manuals Warranty information