POTENZduo features two rings that will soon bring out your full masculinity! Simply slip them on and experience how your penis and testicles stiffen to a state of intense arousal. Ideal for sexually active couples looking to try something new! The many benefits of POTENZduo: Effective penis stimulation. Larger, stronger, and more powerful erections. Extends erection duration. Delays ejaculation. Intensifies orgasm. Even more sensations for her.