JBL JUNIOR 407NC Wireless Noise-Cancelling Over-Ear Headphones (Blue)JBL Junior 470NC wireless noise cancelling over ear headphones introduce a whole new generation to JBL Sound at volumes that are safe for their ears. They wont go beyond 85dB, protecting young listeners from dangerous sound levels, and feature Active Noise Cancelling, so a noisy environment won't make kids want to crank up the volume. You can use the JBL Headphones app to customize their maximum volume and daily listening time, and get daily or weekly