SmartStereo Crisp and Clear Full-Range Sound Performance Bluetooth Headphone. Award of What Hi-Fi Magazine at London. 6 Control Keys,10 Hours Playing time.Foldable Over-Ear Headphone Design. (Black) Award of What Hi-Fi magazine. Voted Best Headphones in London UK 2013. Rank NO.1 collection of Best- Buy wireless Headphones Price under 50. What Hi Fi website 2015. Foldable Design for Travel - The Flow headphones folds up for easy transport and storage anywhere you want.Light weight 126g.SD 55 2016 edition comes with an gift Hard Case Carry Bag. Smart Function: With 6 buttons on the control module, Divided between the left and right earcups.(3 function each earcups.) Answer/Hang up control- VolumeUP-VolumeDown - Previous track - Next track - Pause/Play.To invoke Siri by just pressing the on/off button. Noise Cancellation Microphone Headphones- An In-line Omni directional microphone for having easy on phone calling. (pin code 0000 is required for individual windows phone). Optimized Extra Bass Performance at 2016 edition .More Deep and Punch.