The HA-NCX78 in-ear headphones from JVC provide high-quality sound and a multi-noise reduction system, allowing you to enjoy your music without the distractions of the outside world. The noise reduction system reduces ambient noise by up to 88%, and also reduces wind noise, cable friction noise, and electrical noise. Neodymium drivers provide a wide, clear frequency response.The earpieces come with memory foam eartips and 3 sizes of soft silicon eartips, allowing you to find the best fit for comfort and noise isolation. The cable"s earloop design provides extra stability by directing cables around the ears. The cable provides plenty of slack, and has a gold-plated 3.5mm mini plug to provide compatibility with a wide variety of electronic devices. A dual-prong airplane plug is included for connecting to in-flight entertainment systems. The headphones can operate for up to 50 hours on a single AAA battery, and a handy carrying pouch is included.Features: Multi noise-reduction system reduces 88%ambient noise, electrical noise, friction noise on the cord and 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. 1.5m cord with gold-plated iPhone-compatible slim plug. Carrying pouch, dual plug adaptor for in-flight use, earpieces, ear loops, and AAA battery x 1 included.Technical Specifications: Noise Reduction : 18.5dB at 200Hz (88%) Driver Unit : 8.5mm Magnet type : Neodymium Frequency Response : 18-22,000Hz Input Impedance : 36ohms (when ON), 14ohms (when OFF) Sensitivity : 105dB/1mW (when