TENS Ear Clips
The ear clips are a great accessory for your TENS unit.
The one important thing to know is that they need a conductor on the metal electrodes (see image below) in order to work properly. The conductor helps the current flow smoothly and comfortably. It really makes a huge difference in the feel.
Water works OK as a conductor but thicker options such as aloe vera gel, conductive gel, lotion, etc. tend to last much longer.