Warning: Current must never flow through the heart. Do not use if you have a pacemaker are pregnant if you suffer from epilepsy or on any broken or inflamed skin. See what many adventurously sexual people have discovered about e-Stim. This device is designed to send electrical impulses to terminals and attachable toys placed on the body. Easy to use rotary controls deliver the pulse amplitude and rate of your choice. Simple mode selector switches make adjustments both easy and endlessly refined. Delivers delicate to hyper-intense skin and nerve stimulation. Kit includes 4 adhesive pads instructions sex clamps power unit and 2 sets of lead wires. Electrify your sex life. Lubricants are a natural up-sell to electro stim toys as they are needed to completed the circuit between the toy and skin and also help avoid skin irritation. Water based lubricants are recommended based on their high ability to conduct electricity. Silicone is a natural resistor and is not recommended.