Carson MicroPen 24X-53X Microscope Pen Black. This Microscope Pen from Carson features a built-in LED light that provides a bright clear image and a rubberized eyepiece for comfortable viewing. The Carson Miniature Microscope Micro Pen fits easily in your pocket so you can bring it with you anywhere. Specifications for Carson MicroPen 24X-53X Microscope Pen: Model Number: MP-300 Magnification: 24x-53x Weight: 0.6 oz. Dimensions: 5.125" x .75" .5" Batteries: G3 Button Cell Batteries MSR: 13 Features of Carson MicroPen 24X-53X Microscope Pen Magnification 24x-53x Package Contents: Carson MicroPen 24X-53X Microscope Pen 3G3 Button Cell Batteries Included Carson MP-300: MicroPen 24X-53X Microscope Pen Black