Vsport&reg; Music&Sport Light Waterproof Stereo Wireless Bluetooth Headphone with Microphone for Mobile Phone and Bluetooth Devices Support echo cancellation and noise reduction function Smart APP control, Wireless sports earphone, HIFI sound quality, Remote photo taking, Blu Long work time - 6-8 hours use time With waterproof IPX 7 by Liquipel Watersafe Technology and sweatproof for sports,different size earhat for your confortable convenience, with magnet to avoid headset lose Hi-Fi sound quality and clear communication voice