1. Large memories: can store 50 memories for data analysis.2. °C and °F can be changeable and selectable.3. Setting can be adjusted for different kinds of people (such as white people ， black people， yellow people， etc.)4. Buzzer can be closed or opened by manual5. Alarm value can be set.6. Multiple function: Not only can measure body temperature， but also can measure the temperature of surface， room， bath water， food， baby milk， etc. With clock function.Theory: Infrared ThermometerDimensions: 150 x 95 x 44mm app.Measuring Time: 0.5 SecondsMeasurement Accuracy: ±0.2 DegreeAuto Shut Off: 18 SecondsMeasuring Distance: 5-15cmWeight: 115g app.Battery: 2 x 1.5V AAA battery (not included)Operating conditions: 5 Degree-40.0 Degree， Rh≤85%Color Alarm: Green(Normal): 34-37.3 Degree Yellow(Low Fever): 37.4-38 Degree Red(High Fever): 38.1-42.9 DegreeNote: When the alarm point is set， once the temperature is above the alarm point， the backlight will be RED; if the alarm point is below 37.5 Degree (99.5°F)， there will be no yellow backlight， only Green and RED.