ReFa 4 CAXA ReFa 4 CAXA (ReFa 4 CAXA Silver) This product beautifully guides the face and body with two movements that replicate the techniques of aesthetic treatments: "scooping up" and "pinching and flowing." Microcurrent It takes in light from a large solar panel and generates a weak electrical current called "microcurrent." I purchased this as an authentic product several years ago. A dedicated pouch is included. There is no instruction manual. Please understand that this is a used item. Thank you for looking.