The Pulseroll 4 Speed Percussion Massage Gun will definitely provide you with the most effective massage you have ever experienced, without needing to go to a professional. This gun features percussive therapy to aid muscle recovery , getting deep into the tissue and helping stimulate bloodflow to the muscles. Can use all over the body. The gun comes with 6 portable, easy to change and clean heads, including: Large round head, Small round head, Flat head, Pneumatic head, SPinal head and Bullet head which all have their own individual uses. This gun comes with 4 speed settings, a bult in rechargeable bettery and also comes with a convenient carry case so you can take it on your travels with you.