* Noise canceling circuitry enhances audio sound quality in noisy environments * Built with high-performance speakers for extended frequency range and lower distortion * Fully-closed ear pieces deliver maximum sound and efficiency * Ideal for digital devices * Noise canceling function with indication and on/off switch * 30 hours of noise canceling with 1 AAA battery (not included) * Includes 3.5mm audio/microphone cable, extra ear tips and carrying pouch