This is Dr care Thermometer great, branded new indoor & outdoor thermometer hygrometer combination.This product has the following key features: high stability & accuracy, low power consumption, multi-function, large LCD display. It can truly reflect the situation of environment around. Features: Display temperature , humidity and time at the same time Sampling measures at random Memory of MAX&MIN measuring value 12/24-hour system optional °C/°F temperature unit selectable Alarm clock Calendar function .