Feature:1. MAIN PURPOSE: This optical fiber power meter is mainly used for measurement of continuous optical signal power, controlled by single chip microprocessor, with complete functions.2. BUILT IN DETECTOR: This fiber optic power meter adopts a built in detector, which can be well protected, will not be damaged easily, ensuring long term test accuracy.3. MULTI FUNCTION: This optical power meter supports functions such as lighting, automatic shutdown, memory wavelength, working frequency recognition, user calibration and more.4. UNIVERSAL INTERFACE: With a universal interface, this optical power tester supports SC FC ST 3 interfaces, plug and play.5. LONG ENDURANCE: Built in polymer lithium battery, with long lasting battery life, support multiple USB charging methods such as power bank, adapter, computer USB, car charging, etc.Specification:Item Type: Optical Fiber Power MeterMaterial: ABSWavelength Range: 800~1700Probe Type: InGaAsMeasurement Range: -70~+6Uncertainty: 5%Standard Wavelength (nm): 850 980 1270 1300 1310 1490 1550 1577 1625Display Resolution: Linear display: 0.1% logarithmic display: 0.01dBmFrequency Identification (Hz): 270, 1000, 2000Static Current: 18uAWorking Current: 25mARange Time: 20HCharging Voltage: 5VCharging Current: 500mACharging Duration: 3HAutomatic Shutdown Time (min): 10Power: Charging lithium battery, external inputBattery: Rechargeable lithium battery 400mAh x 1 (built in).Package List:1 x Optical Fiber Power Meter1 x USB Cable1 x Portable Rope1 x User Manual