I have one. Different model. No calibration possible. Insignificant price difference. It's butt-grade crap. Compared to an old-fashioned mercury thermometer at room temperature, it's off by 2-4C, not the promised <1C. My digital thermometers are better. You get what you pay for, as always. I've gotten the most joy out of the laser. Fun toy.

There are high quality IR thermometers on the market, made for industrial use. Accurate to 0.1C at -50 to 500C. Three- or four-figure price tag.