2 Bose QuietComfort Earbuds II Bose Fit Kit: 3 pairs of eartips (small, medium, large) 3 pairs of stability bands (1, 2, 3) Charging case USB-C® (A to C) cable (12") Quick start guide Enjoy amazing sound and noise cancellation that is perfectly yours. You always get fantastic sound quality because CustomTune technology auto-adjusts it to your ears’ liking, personalizing sound to the shape of your ears for an immersive listening experience. Tune out in Quiet Mode when you silence background noise with our proprietary active noise cancelling technology.