... 2.High-quality technology, precise, beautiful and practical. Digital hygrothermograph Technique parameters:Dimension: 137 * 80 * 27mmTemperature range: -30 ~ ... :digital display, can be read at distancecan be use as clock and alarm,12/24 hour format displayGerman imported thermometer ... it with corrosive solventAvoid over shaking and impactWhen the digital figure turn blur, please change a new battery