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: 30mW Red output light wavelength: 650nm Battery: 2xAA battery(not not include) Fiber Type:Single Mode Connector Type:Hybrid Model Number:-G710B Type:30Km VFL 30MW color:Photo color Material:plastic size:180 x 89 x 42mm Package Contents:1 x Optical Power Meter1 x adapter1 x adapterOnly 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.