Function: 1. 4 IN 1 FUNCTION: Multi-functional optical power meter, with red light source, RJ45 network testing and LED light function, which has great practicality. 2. GOOD PERFORMANCE: The power meter supports fast and accurate measurement without waiting for warm-up, with relative power calculation and self-calibration. 3. WORKING RANGE: The power measurement range is -70-10 dBm, with standard wavelengths of 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm. 4. POWER SUPPLY: This fiber optic power meter is rechargeable, equipped with a 3.7V 650mah polymer battery and a USB charging cable, convenient and practical. 5. GOOD STABILITY: Using a sensitive chip, this handheld optical power meter has a small size and solid internal structure for stable and reliable performance. Specification: Item type: Optical Power Meter Model: AUA MC70 Material: ABS Power supply: 3.7V 650mah polymer battery (battery included) Power measurement range: -7010dbm Probe type: for InGaAs Wavelength range: 850-1650nm Standard wavelength (nm): 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 Display resolution: Linear display: 0.1%, Logarithmic display: 0.01 dBm Working temperature: -10-60 Storage temperature: -25-70 Auto power off time: 10 minutes Continuous battery life: not less than 40 hours Package List: 1 x Optical Power Meter 1 x User Manual 1 x lanyard 1 x USB charging cable