Check the listing for details. 20' Fast Temperature Measurement Thermometer. Color: Blue, Condition: New. Listed at 7.89 USD. Stainless Steel Probe: The digital oral thermometer probe is made of stainless steel, which is waterproof and durable. It can easily detect the patient's temperature at home and is convenient to carry.20S Fast Reading: The fever thermometer only needs to be placed under the armpit, the reading speed can be as fast as 20 seconds, and the buzzer alarm indicates that the measurement is complete.℉ and ℃ Switch Easily: The "L" or actual ambient temperature value is displayed when the button is activated. Press and hold the button for 3-4 seconds to convert from the Fahrenheit symbol ''℉'' to Celsius ''°C''.Memory Function: Built-in saving function, automatically display the last temperature reading after booting, convenient to compare the temperature value before and after. The measurement error is stable at 0.1 degrees Celsius.