Advance CVC 6.0 Noise Cancelling Technology: it has a high quality microphone for chat/video calls， and the noise cancelling function makes a lot of difference when you're outdoors<br />Unique Magnetic Earbuds Design: The earbuds have magnets in the back that allow them to stick together when not in use<br />Perfect for Outdoor Activity: it is great for most outdoor activities such as running， cycling， hiking， and is definitely very lightweight and comfortable to wear around<br />Sweat-proof and Solid Battery Life: it is designed to protect against sweat and moisture， with Bluetooth v4.1 compatibility with ultra-long battery life<br />Come with Surprising Breathable Mesh Bag: soft mesh material helps your wet it air dry to keep from damaging; tiny holes provide optimal ventilation while protecting your headphones<br /><br /><br />Product Description<br />Great Sound Quality<br />The Bluetooth headphones feature fantastic audio performance with zone Bluetooth Stereo earbuds with CVC 6.0 noise cancelling to reduce background noise.<br />The  noise cancelling earbuds is hands down revolutionary. If you are looking for the best noise cancelling Bluetooth heaphones on the market today， combined with very good sound and comfort all in a very small lightweight package， it is for you. <br /><br />Tangle-free Cords Design<br />it are designed with flat cables to help eliminate tangles. Featuring a flat cable design to eliminate tangles， each set of it earphones also comes with 3 sets of interchangeable earbuds (S，M，L) - for a comfortable fit without the worry of the earbuds slipping out. <br /><br />Born for Sports<br />it is quite unlike any other sport headphones ， and definitely deserves a spot on our list as one of the best wireless headphones for running. It is designed to be extremely portable， water and sweat resistance.it is lightweight and its design so compact that it easily fits comfortably on the ears. <br /><br />Specification:<br />Frequency response: 20Hz-20KHz<br />SNR: 90~110db<br />Input Voltage: DC5V<br />Distortion: ≤1%<br />Dimension: 6.8×6.9×0.6in <br />Working Voltage:3.7V<br />Weight: 2 Oz<br /><br />What in Box<br />1 × Bluetooth Headphone<br />1 × Micro USB Charge Cable<br />3 × Earbuds<br />1 × Mesh Bag<br />1 × Manual