1,10 WAVELENGTH AND SC FC ST ADAPTER: Fiber optic power meter contains 10 wavelength, 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650 nm and with SC FC ST adapter. 2,AUTOMATIC SHUTDOWN FUNCTION: Optic power net cable wire tester has 10 minutes automatic shutdown function and fast and accurate. Give you a more accurate numerical reference. 3,INTERNAL 650MAH BATTERY: Net cable tester optical power meter adopts sensitive chip and rugged internal structure. Low battery consumption. Capacity internal 650mah internal 3.7V Li ion battery. 4,CALIBRATION FUNCTION: No need for you to wait for warming up for this meter. Our optic power net cable tester can do plug and play with accurate measurement, relative power calculation, calibration function. 5,MAINTENANCE USING AND SUITABLE SCENES: Fiber optic power meter will be covering most of the requirements of communicating engineering maintenance. Suitable for garage and workshop. Item Type: Fiber Optic Power Meter Material: ABS Power Supply: Internal 3.7V Lithium Battery x 1, Capacity 650mah(Shipped With Battery) Power Measuring Range: -50 - and26dBm Probe Range: InGaAs Wavelength Range: 850-1650nm Standard Wavelength: 850, 980, 1270, 1300, 1310, 1490, 1550, 1577, 1625, 1650nm Display Resolution Linearity Display: 0.1 percent Logarithmic Display: 0.01dBm Operating Temperature: -10 - and60℃ Storage Temperature: -25 - and70℃ Auto Shutdown Time: 10 Minutes Battery Duration: Not Less Than 40 Hours 1 x Optical Power Meter 1 x Instruction Manual 1 x USB Cable 1 x Lanyard Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.