Experience customized audio and acclaimed noise cancellation with Bose QuietComfort Earbuds II True Wireless Noise Cancelling In-Ear Headphones, featuring pioneering CustomTune sound calibration technology that intelligently personalizes the noise cancellation and sound performance to your ears. These true wireless earbuds represent a revolutionary advance in noise cancellation and deliver lifelike, balanced sound with nuance, clarity, and depth. The simple touch interface provides device-free control of music, calls and noise cancellation levels, including Quiet Mode for maximum noise cancellation and Aware Mode for keeping an ear to your surroundings.