Additional Notes: Noise Cancellation Comparison for AirPods 4 The noise cancellation performance is overwhelmingly stronger on these. Since the AirPods 4 are an open-ear type, that might be expected, but I realized it after buying them. I can guarantee a significant sense of silence on trains and immersion in music. Anker Liberty Air 2 Pro Soundcore Anker Liberty Air 2 Pro SoundCore White I'm selling these because I bought new earphones and no longer use these. I've used them for almost two years, and I can't confirm the battery degradation, but it's probably not less than 90%. In terms of usage time, you can get at least 3-4 hours of continuous playback from the case. All accessories are included. However, I will not include the ear tips I used for hygiene reasons. Thank you.