Power Meter:
10 wavelength, 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm.
Measurement units: dB, dBm, nW, mW & uW.
LED Flashlight:
Supports extra illumination in dark working condition.
More Functions:
Self Calibration.
Micro USB support external power supply.
Supports 500 data storage.