 noise isolation, fast charging. Goodness me. The noise cancellation is incredible. Now, I want you to say to yourself, what would you spend on something like this? Two, three, 400 bucks? Probably. How about under $100? And I'm going to save you an extra 15%. On top of that, you get eight hours of talk time, 32 hours of battery life, the best fit around, and free shipping.