ERGONOMIC DESIGN: The long anti-slip handle design makes the massager easy to hold it and easily to reach the different body parts that you want to massage. The percussion frequency of the hand held deep tissue massager reaches 3800 times per minute with the built-in powerful motor. ABS with frosted design makes the massagers a perfect gift. Benefits : Helps relieve tired aching muscles, sprains, strains, lower back pain, and neck strain. Easily reaches the places you just cant get to Improve circulation and revive tired bodies - anywhere anytime. To easily massage any part of the body. The massage strength is strong as well as tender and can reach any affected area. Relax tight muscles after exercise.