The Aneros Tempo Stainless Steel Unisex Anal Stimulator has strategically placed knobs on it to utilize the natural rhythms of the inner and outer sphincters. Once inserted, both sphincters spontaneously contract causing this stainless steel beauty to quiver. With a little practice, the Tempo will provide amazingly powerful performances. Use it by yourself or with a partner, both men and women will love exploring with the Tempo. The Aneros Tempo has 3.75 inches of insertable length and max width of .875 inches. Made of medical grade Stainless Steel with a mirror-like finish, this anal stimulator is the ultimate tool for sensual exploration. Unisex anal play for men, women and couples in an exotic material, stainless steel. In a couples scenario while worn by a woman, the male can actually feel its contours through the vaginal walls! How will Tempo move you? Men will also find that the Stainless Steel is an adept prostate massager. Non-vibrating,non-electrical Aneros products are warrantied for the life of the product.