Featuring latest Bluetooth 4.1 CSR technology and state of the art acoustic components that produce incredible sound quality with deep bass and crystal clear treble</br>The new and improved lithium polymer battery allows seamless enjoyment of music for up to 8 hours and 240 hours stand-by with a quick charge of only 1.5 hours.</br>CVC noise Isolation technology reduces outside noises enable clearer microphone sound.</br>Enjoy the interchangeable soft earbuds and secure ear hooks Streamline design improved headphones wearability that you feel like nothing on their back head when you running.</br>Say Goodbye to Water Damage! These Bluetooth headphones special for running are rated IPX7 sweat proof made to withstand the intense heat and sweat of exercise and even jogging in light rain</br></br>Product Description</br></br><br><br><b>Noise reduction and metal ring cavity design</b><br><br> Patented physical impulse noise reduction systembalanced external acoustic wave impactall metal designheavy bass surround sound. <br><br><b>Sport and business transformationpatent design</b><br><br> Removable ear designbusiness leisure and sport a buttonfitted with ear buttonmovement does not fall off. <br><br><b>Super loght and super soft wire plugs</b><br><br> Integrated microphone functionwith the volume +(the next song)volume-(on a piece)function10000 times the reliability of key design. <br><br><b>Large capacity battery system</b><br><br> Wireless music