FDL Sports Wireless Bluetooth Headset Headphone for Iphone4 4s Nokia HTC Blackberry Red-retail Packaging Wireless Bluetooth stereo headphones for streaming audio from compatible mobile phones,PC,laptop,tablet and MP3 players With microphone,control button totally hands-free for smart phones conversationor or control the volume / next track / pause muisc Sweat proof design ideal for sports and active use,Behind-the-head design eliminates wires and provides a light, comfortable fit Up to 20 hours of playback time and 400 hours stand-by time with a range of up to 30 ft range. Can be charged directly from USB port.