1.100% brand new 2.Optical Power Meter + Visual Fault Locator + Network Cable Test. 3.Support three kinds of interface: FC interface, SC interface, ST interface.can measure 8 standdard wavelengths 850/1300/1310/1490/ 1550/1625, 4.support lighting,Support automatic shutdown,Support backlight selection, Support wavelenghth memory function,Support user calibration. 5.Intimately equipped with a small bright LED flashlight for easy inspection in dark environments. Calibration Wavelength: 800~1700nm Detector Type: InGaAs Measurement Range: -70 ~ 6dBm Accuracy: 0.05dB Display resolution:mW:0.1%,dBm:0.01dBm Working temperature:-10~+60 Storage temperature:-30~+70 Auto off time:10Min Power supply:2 x 1.5V AAA Batteries(not included) Battery continuous operating time:greater than equal 48h size:11.8*6.5*3cm Material:plastic colour:blue Package Contents: 1 * All-IN-ONE Fiber Optical Power Meter(Not including the battery) Random deliveryOnly the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.