Specifications: 3 (75mm) in Diameter for 5X Lens 0.78 (19mm) in Diameter for 11X Bi-focal Lens 5X Lens Focal Length: 4 (100mm) 11X Lens Focal Length: 1.7 (45mm) Two Adjustable brightness levels: Gentle and Bright (50%-100%) Premium unbreakable ABS material. Alternative use: flashlight. Can be handsfree or handheld. Products Include: 1 x Magnifying Glass 1 x Color Box 1 x Manual 1 x Data cable Note: 1.Tough Construction Portable and tough enough to take with you wherever you go. 2.The durable construction of the lens and sturdy handle means even kids can use it safely for science experiments. Features: