Bose Quiet Comfort 35 Wireless Headphones II are engineered with world-class noise cancellation. Even better they free you from wires, connecting easily to your i Phone and i Pad with Bluetooth. Clear voice prompts walk you through the connection process and the multi-function button continues to offer access to Siri on your i OS device. And Bose AR provides an audio-only version of augmented reality for remarkable new audio experiences. Volume-optimized EQ gives you balanced audio performance at any volume, while a noise-rejecting dual-microphone system provides clearer calls, even in noisy environments. The headphones feature up to 20 hours of wireless listening per charge and are designed with premium materials that make them lightweight and comfortable for all-day wear. The Bose Connect app helps you set your preferred level of noise cancellation, unlock more features, and access future updates. And you get caught with a low battery, the included cable lets you plug in and keep the music playing.