This pendant comes with a cord.
Shungite is great for protection.
Placing Shungite at the base of a computer, microwave or around your various home electronic devices will not interfere with their operations, but will block out some of their free radial output.
Shungite is also great for headaches, back pain, blood pressure, inflammation and muscle pain.
Place by your bed at night to combat insomnia.
Also boost energy, reduces stress and relieve anxiety.