Made for iOS devices, they use the Lightning port to operate.
Philips and Harman have started introducing noise-cancelling headphones that utilize the Lightning port connector of the newer iOS devices. While noise-cancelling headphones, the famous ones from Bose, are excellent, the drawback is that they need power to operate.
With these new headphones, they draw power from your iOS device using the Lightning port connector, thereby eliminating the need for you to charge or have spare batteries.
One model, the Harman JBL Reflect Aware is aimed for active users allows you to choose how effective is the noise-cancellation so you can still hear outside noise when you are using it outside. At $149, it’s definitely a bargain price for a headphone like this.
Another one from Philips is the Fidelio NC1L that houses a 24-bit digital-to-analogue converter that processes the sound. iOS devices have built-in converters, but with an external converter like the one found on the Fidelio NC1L, the quality should be much, much better. Prepare to shell out $249 for the Philips Fidelio NC1L.