• Magnification: 3X • Lens Diameter: 2” • Glass Lens • 2 Super Bright White LED Bulbs • Built-in-Ruler on Base of Magnifier • Ruler Units: - Inch & Centimeter • Black Plastic Body • Self-Standing • 2 White LED Bulbs • Push Button On/Off Switch on Back • Folds for Easy & Convenient Storage • Requires 3AG10 Batteries (Batteries Are Included) • Unlimited use for Home, Office, Fine Detailed Work, Jewelry, Watch Making Etc