Specification: Item Type: Insert Digital Hygrometer Material: ABS Battery: 1 x CR2032 Button Cell 240mAh (Included) Gross Weight: 45g/1.6oz Outer Frame Diameter: Approx. 50mm / 2in Opening Diameter: Approx. 44mm / 1.7in Package List: 1 x Insert Digital Hygrometer 1 x Rubber Ring 1 x Instruction Book Note: Please allow some error due to manual measurement. Features ENVIRONMENTALLY FRIENDLY ABS: The hygrometer is made of environment-friendly ABS material, which makes the hygrometer have higher stability and toughness, and will not be easily damaged and durable. INTELLIGENT DETECTION: The embedded hygrometer can be used to measure the temperature and humidity of different environments, and intelligently detect the conditions of the storage environment. At the same time, ° C and ° F can be freely switched. EMBEDDED DESIGN: The plug-in digital hygrometer adopts embedded design, which can be smoothly installed in the right place, with rubber ring, so that the embedding of the product can be more stable. The fuselage is small and does not take up space. METAL FRAME DESIGN: The thermometer is designed with metal frame, and the golden frame is bright and shiny, showing high-end elegance. SCOPE OF APPLICATION: The digital hygrometer is very suitable for use in cigar boxes and storage cabinets. It is used to detect the temperature and humidity of the storage space, so that your items can be stored better.