Everything in the world has its unique sound. Using this product, you can produce many marvelous sounds which you are unexpected. How happy we are if we can get the sound as we would like! You can enjoy yourselves on one hand, and do physical exercise on the other hand. Because the blowing is the deep breathing exercise, that can increase your vital capacity, promote your metabolism, and consume your energy and fat. It is also the useful exercise for your abdominal muscles .And you will get a nice figure. Dear friends, please use your phones as soon as possible, and produce the marvelous sounds by blowing the MIC. We will update and increase the objects and sounds constantly for this product.