Features: Display Mode: 3.5 Digits Temperature Range: 32 - 42 ° C Measuring Times: 3 minutes Accuracy: ± 0.1 ° C The current is measured and displayed once the digital degree sign ° C stops flashing Designed specifically to measure baby \ 's temperature easily in 3 minutes Simply press On & Off button and easy to reset the setting Beeper function Auto shut-off function after after usage Has no harm to the environment as well as to baby because no mercury is used. Convenient， accurate， and hygienic for usage A perfect item for babies or children aged under 4 or below Powered by: 1 x LR/SR-41 1.5V Cell Button Battery (Included)