| Brand | Unbranded |
|---|---|
| Main Purpose | Arthritis, Pain Relief, Physical Stress |
| Type | Necklace |
| Color | Black |
| Material | Copper, plastic |
Check the listing for details. Rodin coil necklace (Black). Color: Black, Condition: New. Listed at 55.00 USD. A Rodin coil is an electromagnetic device developed by Marco Rodin that aims to achieve "infinite motion" or "free energy". There are various speculations about the working principle and purported benefits of the rodin coil, but they have not been scientifically proven.