Features: Practical and compact design - portable, easy to carry large screen and LED backlight; external protective cover makes it more durable. Seven calibration wavelengths - 850 nm, 980 nm, 1300 nm, 1310 nm, 1490 nm, 1550 nm, 1625 nm wavelength, with a wide measurement range of -70 - + 10 dB. User-friendly features - Auto power off function can be selected; low voltage function display informs you that the battery is low; user auto calibration will help new users adjust the measurement. Multi-function interface design - Interface for SC, FC, ST; display resolution: linear display 0.1%; logarithmic display 0.01dB. Applications - Fiber optic CATV test engineering, fiber optic CCTV test communication engineering, integrated wiring systems, optical device production and research, optical communication teaching and testing, and other fiber engineering. Specifications: Condition:100% Brand New Color: As shown in the picture Test Range: -70~ + 10db Probe Type: InGaAs Wavelength Range: 800~1700nm Standard Wavelength (nm): 850/980/1300/1310/1490/1550/1625 Display Resolution: linear display 0.1%; logarithm display 0.01dB Working Temperature (C): -10~ + 60C Storage Temperature (C): - 25~ + 70C Automatic Shutdown Time (minutes): 10 minutes Battery Working Time: no less than 40 hours Size: Approx.180*83*28mm/7.1*3.3*1.1in Power: 2*AA rechargeable lithium battery or alkaline battery (Not included) Package List: 1*Optical Power Meter 1*FC Adapter (installed on the host) 1*SC Adapter