● Accurate measurement ±0.2 dB ● Continuous use 60h (only in optical power meter mode) ● VFL with 10mW (Only for OPM-22V) ● Automatic wavelength memory, 6 wavelengths 850/1310/1490/1550/1625nm ● Pocket size ● Network test, judge signal transmission ● Universal adaptor for FC/SC/ST ● With LED lights for dark environment ● Lithium battery USB-charging/ AA Batteries (optional)
