This Electro Shock 4 Prong Wire has 4 prong connectors to be used with compatible electro shock toys and accessories. The additional DC2.5 prong connects to an Electro Shock Controller. How to use: - This accessory requires a controller, and one or two Electro Shock toys which are sold separately - Connect the wires to the controller and the matching devices - See controller and toys for usage instructions WARNING: Do not use electro-sex devices if you have heart issues or other medical conditions. Do not use if you are pregnant.