It’s just silicon, not magic or “energized”
This is a shiny smooth massage tool made out of crystalline silicon. It doesn’t vibrate terahertz energy or anything like that. It is a manufactured chunk of silicon. Made from sand. It is a nice smooth material with high thermal conductivity so it warms up and cools down very easily - again, NOT MAGIC. All claims about terahertz spectrum energy having anything to do with this are completely bogus.
Rating: 2 stars