Feature: * 6 adjustable speed levels can be enjoy! 1. a majority of professional sports teams, have been using high frequency massage guns for the past several years. 2.if you need a really deep massage this is the product for you. if your working in construction, nursing, sports etc... it is quiet. whisper quiet when compared to other massage guns. there are six custom intensity settings allowing you to focus-on deep tissue work, increased circulation, or mobility. every muscle is different, different shape, size, function. 4. 4 massage heads. the massager can activate the muscles, stimulate blood flow, . 5. the replaceable massage head allows your body to enjoy multi-angle massage. you can freely adjust the angle by pressing the button. the massager help release tension and ease sore, tight muscles, relax all of your muscle groups, de-stress, and energize your whole body