Feature: 1. 400X MAGNIFICATION: This microscope has 400X magnification, can quickly detect and understand optical fiber end situation without other tools. 2. PLUG AND PLAY: This fiber microscope is designed with 1.25mm, 2.5mm interface, plug and play, simple to operate. 3. ACCURATE CONTROL: The fiber optic microscope can instantaneously control the on off switch and finely control the focus. 4. MULTI PURPOSE: Both PC end surface and APC end surface can be tested with our handheld microscope, with clear image. 5. HIGH SAFETY: Built in laser safety filter, this optical fiber microscope is secure to use, which adopts premium rubber, ABS and aluminum alloy, can be used safely. Specification: Item Type: Fiber Microscope Material: Rubber, ABS, Aluminum Alloy Magnification: 400X Battery Type: AAA x 3 (Not Included) LED Life: 10,000 hours Laser Safety Filter: Built in Adapter Interface: 1.25 2.5 Replaceable Control: Instantaneous On Off Switch Fine Focus Control. Package List: 1 x Fiber Microscope1 x User Manual1 x Storage Bag