Coolwin Joggerz Sports Bluetooth Headphones with Built-in Microphone New Version Support Tf Card Memory Card Fm Function (Black) Bluetooth 3.0,support TF memory card,support FM function. High Definition Stereo Sound with Noise Reduction and built in Volume and track control Compact design fits in the palm of your hand and weighs less than 2 oz Handsfree,Good for driving or sporting:Dual,high-performance mics deliver superb noise cancellation,so calls come in crystal clear.You just need to press on button Comfortable Behind the Neck design