This is an Empex Thermometer and Hygrometer, a portable weather station made of plastic with a length of 3.75 inches. It is designed to measure temperature and humidity in Celsius. This compact device is suitable for both indoor and outdoor use, providing accurate readings to help you monitor the weather conditions in your surroundings. Perfect for home or workshop use, this handy tool is a must-have for anyone interested in tracking temperature and humidity levels.