Oral Thermometer Instant Accurate Reading Optimized algorithm for oral measures - Our digital thermometer has an optimized algorithm that allows you to take the most accurate fever measurements in just 20 seconds. Battery Indication- It has a battery-powered system and indicates a low voltage prompt if battery < 90% on the screen. It also indicates the latest test value on power on. Hygienic and easy to clean - The waterproof tip allows you to clean the thermometer in an easy and hygienic way. The hard case that comes with the thermometer makes it easy to keep it that way. Safe It is safer than mercury glass thermometers that measure in the mouth or under the arm. Product Specifications: Accurate to 0.1 F Professional Grade Beep alert after measurement Specifications Product Weight: 0.5 Oz (including battery) Measuring Range: 90 - 109 F Lower than 86.6 F shows L Higher than 109.2F shows H Detector: Thermistor Operating Environment: Temp 41 F to 131F Humidity