The Eco Temp Smart from Omron is a neatly designed 10 Seconds thermometer from Omron's award winning design team. The device is suitable for oral, axillary and rectal use, and features a rounded end for patient comfort. The thermometer is compact, lightweight and water,resistant. The On/Off button is conveniently located The device features a clear LCD display that can be switched between Celicius and Fahrenheit., The display retains the last reading for maximum usability. Supplied with a convenient storage case, the Eco Temp Smart is powered by a single, replaceable LR41 button battery. Battery lasts up to two years based on 3 measurements per day.