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The JVC HA-NCX78 headphones use several noise-reduction technologies to not only reduce ambient noise but also cord friction noise, wind noise and electrical noise, while maintaining excellent user comfort and outstanding sound quality. Superior noise canceling technology built into JVC HA-NCX78 headphones reduces ambient noise by up to 88 percent. This makes them a fine choice for enjoying music, and also for minimizing distraction by environmental noise in order to relax or concentrate more effectively.

Multi noise-reduction system reduces 1) 88%ambient noise 2) electrical noise 3) friction noise on the cord 4) wind noise
Detachable soft ear loop for secure over-the-ear cord style
Monitor function on/off allows you to hear surrounding sound without taking ear-set off
Memory foam and three sizes of silicon earpieces for comfortable fitting
50h long battery life
4.9ft(1.5m) cord with gold-plated iPhone-compatible slim plug
Carrying pouch, dual plug adapter for in-flight use, earpieces, ear loops, and AAA battery x 1 included

Stereo Speaker
Headphones	HA-NCX78
Noise Reduction	18.5dB at 200Hz (88%)
Driver Unit	0.33
Magnet type	Neodymium
Frequency Response	18-22,000Hz
Input Impedance	36ohms (when ON), 14ohms (when OFF)
Sensitivity	105dB/1mW (when ON), 103dB/1mW (when OFF)
Power Supply	AAA Battery(DC 1.5V) x1
Battery Life (approx.)	50hours(using Alkaline battery)
Cord Length	4.9ft
Weight (without cord)	1.34oz (including battery)
Plug	iPhone compatible, Gold Plated
Accessory	Carrying pouch x1, AAA Battery x1, Dual Plug Adapter (for in-flight use) x1, Detachable ear loop x1