The noise cancellation circuitry of the JVC HANC250 Noise Cancelling Headphones includes feedback technology, which constant monitors extraneous background noise to eliminate up to 85 percent. For further isolation, JVC employs a double housing structure on each earpiece, providing an extra sound insulation layer. The headphones’ foam-cushioned ear pads add one last layer, not to mention they’re nice and comfortable for long listening sessions.

The headphones use a single 1.5-volt AAA battery for powering the noise cancellation circuitry, squeezing about 50 hours of use from a single battery.