The 420 Scope is a powerful hand-held microscope for the entire 420 community. Bright, ultra white LED light 60-75X magnification Comes with long-lasting batteries. Why Should I Use 420 Scope? So many reasons! But no1 always crop when plant is at its strongest. Tricromes are invisible to the naked eye. When they turn a milky colour instead of clear that is when the plant has reached its maximum potential. A must have for any grower.