Features: Ensures a healthy environment for your baby with the Thermometers Humidity Meter, feature high precisions sensors that provide realtime temperature and humidity data to keep you informes of any change. With a portable build, this mini hygrometer easily fit on cribs, desks, or wall without taking up much space, offering a convenient monitoring solution for any room. Great for parent of newborns and infants who wishing to create a safe and healthy environment, as well as adults with high standard for home comfort and professional like pediatricians and childcare experts. Great for use in baby room, children room, and family space such as livingrooms and bedrooms, this device help optimizes sleep quality and overall comfort by monitoring indoor conditions. Feature a face pattern comfort indicators, the Thermometers Hygrometer not only provide accurate readings but also offer a intuitives user experience, making it a essential tool for maintaining indoor climates. Specifications: Component: ABS Color: White Size:Approx. 5x4.6cm/1.97x1.81in Power Supply: 1pc CR2032 button battery(Included) Optional Quantity: 2pcs, 4pcs Package Includes: 2pcs or 4pcs Temperature and Humidity Sensors (optional) note: Please allow 1-2cm error due to manual measurement. please make sure you donot mind before bid. Due to difference between different monitors, the picture may not reflect the actual color.