The nubs provide additional clitoral stimulation for women during intercourse. When the ring is rotated, it stimulates the testicles. The imagination knows no bounds. With five vibration programs and five intensities, Tyler offers a wealth of possibilities. Operating Tyler is very simple: by pressing the button for two seconds, you turn it on and off. The five vibration intensities can be adjusted by simply pressing the button. When you turn Tyler on, it automatically starts at the medium intensity. After reaching the highest level, it will revert back to the lowest intensity with another press. You can change the program with a double click. The inner diameter of the ring is 2.9 cm when not stretched. You can also enjoy Tyler in the bathtub or shower, as it is waterproof. The battery of Tyler fully charges within an hour and lasts for one hour of use. Tyler's silicone is not only skin-friendly but also produced in a 100% environmentally friendly manner. Extremely powerful vibrations for both him and her, 100% waterproof, rechargeable, textured surface for intense clitoral stimulation, extremely soft silicone penis ring with comfortable wear, vibration modes.