Features Fast and Accurate: The multifunctional optical power meter has a built in sensitive chip for accurate measurement results and quick response. 10 Wavelengths: Can measure 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm wavelengths, covering most of the needs of communications engineering maintenance. Low Battery Consumption: This multifunctional optical power meter has low battery consumption and can operate continuously for 120 hours. Strong Function: This multifunctional optical power meter has relative power calculation and calibration function with stable performance. ABS Housing: This multi functional optical power meter uses ABS plastic as the housing, lightweight and wear resistant, sturdy structure, easy to carry. Specification: Item Type: Optical Fiber Power Meter Material: ABS Wavelength Range: 800-1700nm Optical Connector: Universal connector (SC/FC/ST) Connector Type: InGaAs Power Measurement Range: -70-+10dBm 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: 2 x AAA battery(excluded) Battery Duration: Greater than or equal to 120 hours (optical power meter function) Automatic Power Off Time: 10min Color: White Package List:1 x Optical Fiber Power Meter 1 x Lanyard1 x Instruction Package List 1 x Optical Fiber Power Meter 1 x Lanyard 1 x Instruction