Function: can measure 10 standdard wavelengths 850/980/1270/1300/1310/1490/ 1550/1577/1625/1650nm , test range: -70dBm~+10dBm. Support LED lighting,Support automatic shutdown,Support backlight ,Support calibration. Support //ST universal interface. The light power meter ,Test precision, fine workmanship, easy to carry. Connector Type: //ST Power meter interface: InGaAs Wavelength range: 800 to 1700nm Red output optical power: 10mW Red output light wavelength: 650nm Battery: 2xAA battery(not not include) Fiber Type:Single Mode Connector Type:Hybrid Model Number:-G710B Type:10Km VFL 10MW color:Photo color Material:plastic size:180 x 89 x 42mm Package Contents: 1 x Optical Power Meter 1 x adapter 1 x adapter 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 a little different from the real thing. The measurement allowed error is +/- 1-3cm.