Features 1、Fast and Accurate: This optical power meter can do fast measurements without waiting and is directly available. Covers most of the needs of communication engineering maintenance and net testing. 2、10 Wavelengths: This optical multimeter has 10 wavelengths, 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm, and SC FC ST adapters. 3、Relative Power Calculation: Our optical multimeter can do relative power calculation and calibration function, so that your measurement is more accurate. 4、Low Battery Consumption: Our optical power meter has low battery consumption, it is rechargeable type and can achieve 120 hours of continuous operation. 5、Sensitive Chip: This optical power meter has a sensitive chip and sturdy internal structure, small size and light weight, very convenient to carry. Specification Item Type: Multifunctional Optical Power Meter Material: ABS Wavelength Range: 800 to 1700nm Optical Connector: Universal connector (SC or FC or ST) Connector Type: InGaAs Power Measurement Range: -50 to +26dBm Measurement Accuracy Error: <±5% Standard Wavelength: 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm Display Resolution: Linear display 0.1%, logarithmic display 0.1dBm Identifiable Frequency: 270Hz, 300Hz, 1kHz, 2kHz Power Supply: Lithium battery 3.7V capacity 700mah (shipping with built in battery) Interface: Micro USB Battery Duration: Greater than or equal to 120h (optical power meter function) Automatic Shutdown Time: 10min Red Light Source Function Working Wavelength: 650nm ± 30nm Working Mode: CW, 1Hz, 2Hz Package List 1 x Handheld Optical Multimeter 1 x USB Cable 1 x Instruction Manual 1 x Lanyard