Each individual clamb is uni-polar but together in use these clamps are bi-polar.
Warning: don't put 2 plugs into one clamb because you create a short cut and no shocks will be felt.
Always be careful, do not use if skin is broken or iritated, when you
have heart problems or are pregnant. Tip: use contact gel to experience the best results.
These Electro Clamps have a 2,5 mm jack plug that connects directly to all Power Box devices with the same sockets
