• Optical Glass Lens • Magnification: 10X • Lens Diameter: 1” • Dimensions: 1-13/16” x 2-5/16” x 2-7/16” • 3 Super Bright White LEDs • 30mm Fold Out Ruler; 1mm Increments • Self Standing Design • Black Zinc Alloy Body • Leather Pouch • Requires 4AG7 Batteries (Batteries Are Included) • Unlimited Use for Jewelers, Watch Makers, Fine Detailed Work, Homes, Office, Hobbies Etc