2 Years warranty. 5 inches LCD read data directly, Lightweight and convenience, also have software to output colorful gragh. Output in csv, jpg, pdf, ohs format. With auto zeroing capabilities, you can be sure you'll always get a reading with pinpoint accuracy, integrating time 50us-10s, really fast! Long focal length optical system, 2 nm optical resolution of Spectrometer; High performance linear CCD sensor 3648 points with CNC processing technology of aluminum alloy shell; wavelength from 380 to 780 nm Precise Measurement: Cct, cri, flicker freq(hz), flicker percent(%), flicker index, flicker curve...etc. Flicker Meter can test screen led light...etc. also can use as Lab Equipment. Handheld and Portable. Bring Anywhere: From squeezing into tight places to keeping your load light, you can bring Light Spectrum Analyzer wherever you need to. Fits easily into a work bag or large pocket and barely adds any weight. It's the ultimate in light-metering convenience!