Compact and Portable: Small size and lightweight for easy portability. Suitable for home, travel, dorm and so forth. 20 Seconds Fast Reading:Used to measure armpit temperature and can give out an accurate temperature readings with 20 seconds, faster and accurate. Indicator: When the measured value is lower than 32 degree, the display shows L; If higher than 42 degree, it shows H. With memory function, auto display the last measured value after power on, help you easily track the fevers progress. Auto Power Off:The thermometer has an automatic shutdown function, but in order to extend the battery life, it is recommended to turn off the power timely after measurement. Voice Prompt:Thoughtfully designed with voice prompt to remind the working status. It will give out beep prompts after 20s fast measuring, 4 mins actual measuring and when the measured temp is out of test range.