Small enough to fit in your pocket, the supremely portable MDR-NC100D digital noise canceling headphones combine powerful technology with a comfortable earbud design to produce incredible noise reduction with pristine audio. Sony-exclusive digital signal processing technology reduces up to 98.2% of ambient airplane, train, or office noise. Large 13.5mm drivers work with digital sound enhancer circuitry to deliver wider frequency response and broad dynamic range while built-in Artificial Intelligence (AI) technology automatically adjusts to your surroundings to offer the optimal level of noise canceling customized to the environment and sound conditions. These premium earbuds also include a travel pouch, in-flight plug adapter, neck-chain style cord with controller (4.9 ft), a cord adjuster, and AAA battery. Earphone
