These ElectraStim Electro cock rings are intended to connect to an electro unit, from which you will get electrical stimulation.

Place one ring over your penis and the other over your testicles and tighten it so that it sits as it should (the cock rings are made from rubber, and therefore extends when you get an erection). Connect the electro unit's power cord to the cock rings, turn on the power and enjoy the stimulating electrical impulses.

These two ElectraStim Electro Cock rings are unipolar so that you can connect a power wire to each cock ring, but not two wires to one cock ring.

The cock rings are adjustable and can fit a penis of up to 3 inches in diameter.

Note! The cock rings are compatible with, amongst others, the Mystim Tension Lover Digital Electro Sex Unit, the Mystim Pure Vibes Analogue Electro Sex Unit and the Rimba Digital Electro Sex Unit, which are all sold separately.

If you already have an electro unit, then it should have a 2 mm male plug to be able to use these cock rings. 

MATERIAL: Rubber. 
SIZE: Fits penises with a diameter of up to 3 inches.
ADJUSTABLE: Yes.
PLUG: 2 mm male plug.
COMPATIBLE WITH: Mystim Tension Lover Digital Electro Sex Unit, Mystim Pure Vibes Analogue Electro Sex Unit and Rimba Digital Electro Sex Unit.