I bought a cheap Tens unit about a year ago and hooked it's up to my cock and glans rings, perinium, balls, etc.... And nothing special happened. Tried all frequencies and pulse widths and nothing. Tried it's again them others day, still no stimulation with one wire on my cockring and one one my glans ring. Just felt them electrical pulses with no arousal. Finally I removed the glans ring electrode and stuck it up my ass, turned the Tens on and wow! I got a big hard on, I could feel the pulses in my ass and I came hard, my ass pulsated more and more. I finally figured estim out for me. What anal toy will work well with my Tens? Got to have one!