The Opus E combines e-stim and male masturbation with soft interior that transmits electrical currents from the base of the penis to the tip. A Masturbator with adapter cable to connect it to the E-stim devices TENSION LOVER or PURE VIBES. Also suitable for the wireless receiver SULTRY SUB. Can also be used without electrical stimulation. Anatomically neutral opening.* You will need an A00400- Mystim Tension Lover Digital Nervstimulator or A00438- Mystim Cluster Buster Starter Kit to be sold with it in order to function as an E-stim product.