Features 1、[3 in 1] This fiber optic tester combines an optical fiber power meter, visual fault locator, and LED light in one compact unit, suitable for various testing needs. 2、[Wide Testing Range] This optical fiber power meter supports 10 standard measurement wavelengths ranging from 850nm to 1650nm, with a testing range of -70dBm to +10dBm. 3、[User Friendly Features] Backlit display, automatic shutdown after 10 minutes of inactivity, and storage capacity for up to 500 data sets for convenience. 4、[Accurate Measurement] The optical power testing error is less than 0.2dB, users can easily calibrate data, ensuring accurate results every time. 5、[Rechargeable and Portable] Powered by 3.7V 650mAh rechargeable lithium cell, with convenient Type C interface for charging, ensuring portability. Specification Item Type: Optical Fiber Power Meter Material: ABS Model: A C710B Power Testing Range: -70 to +10dbm Probe Type: InGaAs Wavelength Range: 850-1650nm Testing Accuracy: ±0.2dB 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 to +60℃ Storage Temperature (℃): -25 to +70℃ Auto Power Off Time: 10 Minutes Red Light Source Testing Distance: 15mW Output Wavelength: 650nm Size: Approx. 180x89x42mm / 7.09x3.50x1.65in Power: 3.7V Rechargeable Lithium Cell x 1, Capacity 650mah (Built in) Package List 1 x Optical Fiber Power Meter 1 x FC Adapter 1 x USB C Charging Cable 1 x User Manual