The SGX is a medically researched and designed device that works in harmony with your body's own movements, redesigned along with the MGX from our original model. It is easy to use and fulfilling, with progressively rewarding exercises and experiences. The SGX was originally designed for the Asian market. The insertion length of the SGX measures approximately 1/2 inch shorter (3.5 inches) than the MGX. The SGX has a balanced head and stem. The stem features ridges that add stability when using the SGX. The P-Tab provides external prostate stimulation by massaging the perineum.