Experience powerful sound with Sony ULT WEAR cordless wireless headphones. This premium headset features the ULT button with two sound settings - Deep Bass for resonating depth and Attack Bass for energetic drive. Noise cancelling technology powered by Integrated Processor V1 lets you fully immerse in music without distractions. With up to 30 hours battery life with noise cancelling on (50 hours off), enjoy uninterrupted listening all day. Multipoint connection lets you connect to two devices simultaneously, switching automatically between music and calls.