Features: 1) LED illumination 2) Laser filter installed for eye protection 3) Versatile adapter interface 4) Clear bright images 5) Smooth focus control 6) Momentary or push button on / off switch (ST, SC and FC) 7) Also available for small from factor connectors (LC and MU) Specifications: 1) Optical magnification: 200x (FMC200 / FML200), 400x (FMC400 / FML400) 2) Power source: 3 x AAA alkaline batteries 3) Light source: white LED, rated for 100,000 hours 4) Controls: momentary on / off switch for light source, fine focus control wheel 5) Safety filter: built in IR filter 6) Adapter interface: interchangeable universal slip grip tips, or dedicated connector type 7) Colors: black and silver 8) Weight: 0.6kg 9) Dimensions: 225 x Dia. 32mm, 8.76 x Dia.1.25 How to choose between the OL series and the CL series? Both series of our handheld fiber microscopes (OL series and CL series) provide excellent views of the ferrule end face. We recommend 400x magnification for single-mode and 200x magnification for multi-mode: 1) If you frequently terminate fiber and have received professional training, you are probably best served by our CL series microscope 2) If you only occasionally terminate fiber, and are unsure, you might consider the OL series