Infrared thermometer with protection cap & ball pen, 2-in 1 design Quick, non-contact and accurate temperate taking Pen-style design, easy to carry and use Ds ratio: 1:1 Patent design: measuring top with thermal protection to be more accurate upon taking temperature Patent design: measuring top and tube with anti-dust and anti-static Protection to Keep it clean and safe Low power consumption Displaying battery capacity in square pattern Response time: 1 second Emissivity: 0.95 fixed Update frequency: 1.4 hz Wavelength: 5 to 14 um Auto shut down: 15 seconds Operating temperature: 0~50°c (32 to 122°f) Storage temperature: -20°c to 65°c (-4 to 149°f) Power voltage: 3v Battery: lr44 x 2 Dimensions: o14.2 x 145 mm Weight: 46.8 g (includes batteries)