This little device is so much more than just a thermometer! It shows you the temperature (from -4°F to 158°F or -20°C to 70°C), humidity (10% to 99%), time, date, AND has an alarm clock function. The dual comfort indicator is genius - it tells you if conditions are dry/comfortable/humid for humidity and cold/comfortable/hot for temperature at a quick glance. The 3.15-inch LCD display is super clear with bold numbers that are easy to read from across the room. It updates every 10 seconds so you're always getting current readings. Accuracy is pretty good too - ±1.8°F for temperature and ±5% for humidity. It runs on one AAA battery (included!) that lasts about 12 months. No backlight function, but the display is clear enough in normal room light. This is perfect for monitoring your home environment to prevent issues like dry skin, allergies, asthma, or just general discomfort. Knowing your humidity levels can help you decide when to use a humidifier or dehumidifier. The compact size means you can place it anywhere - bedroom, living room, baby's room, office. The white color blends with most decor. It's lightweight and portable if you want to move it between rooms. For the price, it gives you so much information to help create the ideal indoor environment for your family's health and comfort. Really useful little gadget!