Handheld Microscope Features A Sliding Focus Knob, Built-In Light Source, And A Lightweight Design. This 100X Magnification Handheld Microscope Is Perfect For Use During Field Trips Or In The Classroom. The Microscope Requires The Use Of 2 Aa Batteries. Features: Handheld Microscope 100X Magnificationspecifications: Small Parts - Choking Hazard - Safety. Not Suitable For Children Under 3 Years. Contains No Allergens. Magnification 60X 100X. Material: Plastic, Metal. Number Of Batteries: 2