New Open Box Open to offers! 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. Features & details QUIETCOMFORT EARBUDS II: These wireless, bluetooth, noise cancelling earbuds from Bose are engineered to fit you. They intelligently personalize the noise cancellation and sound performance to uninterrupted, immersive listening wherever you are. To ensure all-day comfort and a secure fit, they come with three pairs of ear tips and three pairs of custom stability bands, so you can find the best fit for your ears. Own your uniqueness with sound and fit shaped to you. BOSE PROPRIETARY ACTIVE NOISE CANCELLING TECHNOLOGY EARBUDS: QuietComfort Earbuds II intelligently personalize the noise cancellation and sound performance to your ears, so you can enjoy deep, immersive sound and noise cancellation.