Quality Material. the Body of Pen is Made of Quality Copper Material, & the Middle Part is Made of Zinc Alloy Material, Which Are Sturdy, Serviceable & Anti Corrosion, Not Easy to Break or Fray, Supporting for a Long Time Use Easy to Use. This Multifunction Ball Pen Pen has LED Light. Press the Top to Turn on the Lighting Function. When You Turn the Ball Pen Pen On, It Will Bring You More Fun. It Can Also be Used as a Back Up Torch in the Dark Help You Regulate Your Mood. the Smoothly Fidget Pen Can Help You Relieve Stress & Anxiety, Thus Helping You Improve Your Attention & Work Efficiency Wide Applications. Ideal Gift Pen for Ladies, Men, Suit Ball Pen Pen for All Brain Workers, Such as Teachers, Designers, Students, Clerks, Engineers, Workers, Doctor, Lawyers, Etc