Easy@Home Digital Oral Thermometer, Rectal or Underarm Body Temperature Measurement, for Baby, Child and Adult (Green), BT-A21CNCLINICALLY HIGH ACCURACY: The digital thermometer is a small size clinically accurate thermometer with high precision at ±0.1°C in range of 32.0-42.9°C. Measures Body Temperature to 1/10th of a degree precision (e.g. 36.2 °C) in Celsius. A good choice for families, schools, hospitals and clinics.EASY TO USE AND SAFE: Just turn on the thermometer, place the probe under the tongue and closed the mouth for about 25 seconds to finish a measurement. An Alarm Beeping indicates the completion of the measurement. The memory function shows the last temperature reading on the LCD display after power.