the infrared non-contact thermometer arrived fairly quickly and in perfect condition hand engages easy reading T ° is instantaneous. it is very light but with rubber protection that gives a good grip, works with a standard 9 volt battery and measurement well to its limit of 550 °, I check the calibration with a professional thermocouple I use this camera for my troubleshooting measure in case of failure of my infrared pro, I can say that it is perfect for the general public, against the manual is in English, but this is not a problem it can be used for example for pizza lover to check their T ° oven