Jade is rich in calcium, magnesium, and iron-essential minerals for your body. Jade is best known natural transmitter of long-wave length infrared. When heated, Jade emits negative ions, which are essential for the body's natural anti-aging system, keeping your body in harmony. This personal massager uses the healing powers of Jade to help relieve your muscle pain. This unit by Prosepra has heat to assist in soothing away the stresses of your day. You can control the speed of the vibrations to fit your needs.