ADVANCED ACTIVE NOISE CANCELLING FUNCTION:E7 will be eliminate the noise you don't want to hear,Advanced active noise cancelling technology quells airplane cabin noise, city traffic or a busy office, makes you focus on what you want to hear, it can bring your listening experience and bring you peace of mind. BALANCED SOUND & STRONG BASS :Clear vocals,Precise guitars, excellent Deep bass and crisp percussion that they provides immersive Hi-Fi sound that helps you enjoy your music better.We try our best to provide customers with lifelike sound quality,which is always the goal and constant pursuit of our company . SUPER COMFORTABLE PADDING and STRETCHABLE HEADBAND ：Designed with cushioned, pressure-relieving ear pads that you can have headphones over ear on for hours not feeling your head would explore due to the pressure.Super Protein Earpads and stretchable headband make the headphones fits perfectly and securely on your head .You can adjust to the best angle according to your needs,E7A headphones are great for everyday use!