They work well with my TENS LG-7000 handheld unit which only runs on a 9 volt battery. I can feel it in my calves. At first it seems strange, but after a few minutes it is a very relaxing feeling, like a continuous pulsating massage. You must keep constant pressure on the slippers to keep good contact with the electrodes. You'll want to sit down while the TENS unit does its job. Play around with the settings on your TENS unit to find what you like. If you don't feel like anything special is going on, try putting some conductive gel on your contact lenses. The slippers appear to be about a size 9 for men in the US, so if that suits you, you can still get the effects of acupressure (whatever that is). Rubber protrusions, wearing slippers around the house. I can confirm that they work with snap connectors AND pin headers. However, at first I couldn't figure out where the pins would go, so I bought these pin adapters, which actually give me extra length to spread my legs: KONMED 4pcs/pack. for block of ten with 2.0 mm contact wires. When I actually read the instructions that came with it :) I found out where the pin connections were. Near the latch is a rectangular rubber pad with a small hole along the inside of the arc. I inserted a photo.
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