Designed for greater comfort - AirPods 4 have been redesigned to provide exceptional comfort and better stability all day long. They feature an improved outer design, a shorter stem, and music or call controls with a simple press. 
Personalized spatial audio - With spatial audio featuring dynamic head tracking, sound surrounds you from every direction, immersing you in a cinematic-level experience when listening to music, watching TV shows and movies, playing the best games, and much more. 
Enhanced sound and call quality - AirPods 4 are powered by Apple's H2 chip. The "Noise Isolation" mode improves call quality in noisy environments by using advanced computational audio to reduce background noise, isolate your voice, and increase clarity for the person you're speaking to. 
Magical experience - Just say "Hey Siri" to play a song, make a call, or check your schedule. Thanks to Siri interactions, you can now respond to Siri with a vertical nod for yes or a horizontal shake for no. You can easily pair AirPods 4 with your device by placing them nearby and tapping "Connect" on your screen.* You can also share a song or show between two pairs of AirPods effortlessly. AirPods 4 also include a skin-detect sensor that plays audio only when the earbuds are in your ears and pauses it when you take them out. Additionally, you can track your AirPods and charging case using the Find My app. 
Long battery life - Get up to 5 hours of listening on a single charge, and up to 30 hours of total listening time using the case.
New case design - The charging case allows charging with a USB-C cable and is more than 10% smaller than the previous generation.
Dust, sweat, and water resistance - AirPods 4 and the charging case are dust, sweat, and water resistant with an IP54 rating, capable of withstanding rain and intense workouts.