male sex toysused in couples are mainly three. Thevibrating ringis worn at the base of the penis and provides vibration to the partner's clitoral area during penetration, it is the most direct tool to stimulate both simultaneously without changing position. Thepenis extenderadds size and, in versions with external texture, increases stimulation for the partner during intercourse. Thesimple phallic ringimproves hardness and duration of the erection, indirectly changing the experience for both.male sex toyslikeautomatic masturbatorsare mainly designed for solo use, but some interactive models can also be used in couples even at a distance.