... cartridge: 1,Tourmaline stone2,Maifanite,3,Far infrared stone,4,Calcium ion,5,Nano silver powder Diameter:4.7cmColors : Black , Silver , ... energy Cup is able to release iron, zinc, iodine, calcium and other various minerals and trace elements that are essential ... - elements, catalyzing and activating the driving force of life!5. High in oxygen: Improve sleep qualityThe aerospace ceramic cores adopted ...