Features INTEGRATED MACHINE: red light source all in one machine, red light wavelength for 650nm, with SC connector, convenient to plug and play SEVEN WAVE LENGTHS SUPPORTED: Accurate test, supported wavelengths are 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm UNIVERSAL CONNECTOR: Wide range of applications, standard 2.5mm interface is universal for SC, FC and ST connectors ACCURATE AND STABLE - Powerful built-in light source chip, which uses excellent intelligent chip, accurate data to test, owns strong light source and stable lighting LIGHTWEIGHT AND PORTABLE: The fiber optic power meter is made with fine workmanship, easy to carry, which is a good replacement Specification: Item Type: Fiber Optic Power Meter Standard wavelength: 850nm, 980nm, 1300nm, 1310nm, 1490nm, 1550nm, 1625nm Red light wavelength: 650nm Batteries: 2 x AA batteries (not included) Type: Fine Type Grey Package List: 1 x Host. 1 x SC Connector 1 x user manual Package List 1 x Host 1 x SC Connector 1 x User Manual