I use high quality versions of this for work. Thought I鈥檇 get one for home use. Returned it because it doesn鈥檛 work well. Temperature reading is slow to obtain. Wind m猫tre works to about 30km, after that not accurate. Main problem is wind chill calculator didn鈥檛 work. Temp was -5, wind 15km/hr, wind chill only went down a degree, which I know is very inaccurate. Returning.