This powerful penis pump and robo masturbator two-in-one offers multispeed suction at the touch of a button, with a strong 12 in. ABS cylinder, easy-to-read measurements, and quick release valve button. Anatomically correct, the Mouth is luxuriously plush, featuring soft massage beads at the opening for incredible stimulation. Disassembles for easy cleaning. Usable pump length is 8.3 in., circumference is 7.85 in. Requires 3 AAA batteries.