Keri is a super powerful external massager covered in ultra soft environmentally-friendly body-safe silicone. Keri has 5 vibration modes, including Caressing, Joyous, Passionate and Climax mode. Keri‘ s unique semi-arced massaging head is the only part that vibrates, keeping the vibration from numbing the hands and allowing for a focused, pleasurable experience. Its unique one-button control can provide up to 25 vibrating frequencies.