The Citizen CTA-303 digital thermometer provides accurate basal body temperature readings for ovulation tracking, fever detection, and general health monitoring. Designed for the whole family, it features antibacterial protection, IPX5 water resistance for easy cleaning, and a one-button operation with fever alarm. Memory recall displays the last reading, and results are delivered in 60 seconds (oral/rectal) or 120 seconds (underarm). Includes a protective storage case and battery.