Features 1. Emojis Air Comfort Indicator: Humidity temperature gauge features face icons to indicate air condition quickly with just a glance. Great for monitoring family's living conditions and health by preventing colds, dry skin, mold etc. 2. Easy to Install: Mini Digital Humidity Meter with double-sided pads, you can stick or place anywhere you like such as counter, baby room, kitchen, basement, office, greenhouse, guitar room, office, garden and cella. 3. Reliable Accuracy: The comfort level of the smiling face is that the temperature should be below 26 degrees, and the humidity should be 40% - 70%, which is the smiling face. If it is just humidity, the smiling face will disappear if the temperature is not below 26 degrees. 4. Small and Portable: Thermometer for home's size 1.77 x 0.62 inch, its weight is only 22g, durable and portable enough for saving space and carrying around. 5. Wide Application: Hygrometer thermometer can be applicable to home, office, car, laboratory, greenhouse, etc. It can be used with humidifiers, heaters, and air conditioners, etc. Specification Material: ABS Color: White Size: 4.5 x 4.5 x 1.6 cm Weight: 22 g Package Include: 1 Mini Thermometer