1、SEVEN WAVELENGTHS SUPPORTED: Rigorously tested, supporting wavelengths of 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm. 2、UNIVERSAL CONNECTOR: Wide range of applications, the 2.5mm standard interface is universally compatible with SC, FC, and ST connectors. 3、ACCURATE AND STABLE: Powerful light source integrated chip, with an excellent smart chip, accurate for testing data, featuring a strong light source and stable illumination. 4、INTEGRATED MACHINE: Red light source all-in-one machine, red light wavelength of 650nm, with SC connector, convenient for you to connect and use. 5、LIGHTWEIGHT AND PORTABLE: This optical fiber meter is made with fine workmanship, easy to carry, making it a great replacement. Item Type: Optical Fiber Meter Standard Wavelengths: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Red Light Wavelength: 650nm Batteries: 2 x AA Batteries (Not Included) Type: Gray Thin Type 1 x Host 1 x SC Connector 1 x User Manual