Welcome to our store! Better Testing: This optical fiber power meter with a -70~+10dbm wide test range also boasts higher accuracy in measurement. Reliable Use: With relative power and calibration function, as well as a digital display, it's very easy to use. 10 Wavelengths: 850nm, 980nm, 1270nm, 1300nm, 1310nm, 1490nm, 1550nm, 1577nm, 1625nm, and 1650nm – 10 types of wavelengths. Simple Operation: Designed with a robust internal structure and sensitive chip for a very fast response, just plug and play. Easy to Carry: Comes with a compact size and lightweight design, making both storage and carrying very convenient. Item Type: Optical Fiber Power Meter Model: AUA-MC70 Material: ABS Power Supply: 3.7v 650mah polymer battery, comes with built-in battery. Power Range: -70~+10dbm Probe Range: 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: 0.01dBm. Working Temperature: -10~+60 ℃ Storage Temperature: -25~+70 ℃ Automatic Shutdown Time: 10 minutes Battery Continuous Working Time: Not less than 40 hours. 1 x Optical Fiber Power Meter 1 x User Manual 1 x Lanyard 1 x USB Charging Cable Your 100% satisfaction is our top priority. We will provide you with the best service. If you encounter any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!