For a proper Gunfu Cha ceremony, it is important to know the temperature of the tea water: this digital thermometer will be an essential addition to your tea ceremony! Usage - Turn it on by pressing the ON/OFF button. Wait for the self-test to finish, during which the entire display will light up before showing the normal display. - Remove the protection from the metal tip and immerse it in the water you wish to measure for at least 25mm and wait until the measurement stabilizes. - Turn it off by pressing the ON/OFF button. - Press the ‘°C / °F’ button to change the unit of measurement. Battery: 1 x 1.5V (not included). Safety Refer to the instructions on the packaging for proper use of the digital thermometer.