Connector Type: //ST Probe Type: InGaAs Wavelength range: 800 to 1700nm Calibration wavelength: 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm Automatic shutdown time: 10 minutes Power supply: 2 x AAA batteries (not include) Fiber Type:Single Mode Connector Type:Hybrid Red output optical power: 30mw Measuring range: -50-and26dbm Model Number:-M50 color:Orangeandgray Material:plastic size: x 69 x 30mm Package Contents: 1 x Optical Power Meter 1 x rope Only the above package content, other products are not included. Note: Light reflection 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. 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. Sold by-Dadangjia