It was 1,5 months, although delivery was chosen from Russia-returned money on the dispute. Measures quickly-for 5 seconds. Externally made qualitatively and conveniently. But there is one drawback-it does not show all the values in a row, but with much more discretion than 0,1 degrees. Here are the values it shows: -2,8 0,4 3,0 5,4 7,5 9,5 11,4 13,1 14,7 16,2 17,7 19 20,3 etc. D. T. E. Let's say we measured the temperature-2,8, if then gradually increase the temperature, then the thermometer will still show-2,8 until the temperature reaches 0,4, then it will show 0,4. It's total bullshit, I think it's why you do it. I was disappointed with that. Even the cheapest similar for 150-200 rubles and then show each tenth degree, though a little slower. I thought after receiving the parcel to return the money to the seller, but now I do not want to. Although it seems at high temperatures is not such a big step of display.