This is a particularly high quality rigid-tipped thermometer. At 155mm it is longer than most digital thermometers, making it well suited for large animal clinicians, but it still has a 3.2mm diameter tip making it comfortable for companion animal use. The unit displays a temperature range of 32'-43'C with an accuracy of +/-0.1' and reads in 10 seconds. It automatically turns off to preserve battery life and displays the last value when turned on. Waterproof and shock resistant with a replaceable (100 hours) battery.