Bose QuietComfort 35 wireless headphones are engineered with world-class noise cancellation that makes quiet sound quieter and the music on your iPhone and iPad sound better. Free yourself from wires and connect easily to your devices with Bluetooth pairing. Volume-optimized EQ gives you balanced audio performance at any volume while a noise-rejecting dual microphone provides clear calls even in windy or noisy environments. Voice prompts and intuitive controls make communicating and controlling your music hassle-free. A lithium-ion battery gives you up to 20 hours of wireless play time per charge. To ensure comfort for such all-day listening QuietComfort 35 headphones are designed with premium materials that are lightweight and easy on the ears. There's even a Bose Connect app you can use for a more personalized experience.