AcuRite's 24” Illuminated Outdoor Clock with Thermometer and Humidity Sensor delivers beauty and function, day or night. It features an integrated light sensor that automatically activates a warm, ambient backlight during dark conditions. Durable all-weather construction makes this a functional addition to any patio or garden. The stylish, sleek design makes it perfect for indoor décor as well. It also features a reliable quartz crystal movement, accurate temperature, and humidity readings, and easy-to-read Roman numerals. The thermometer measures temperatures from 0 to 100 degrees Fahrenheit; the humidity sensor readings range from 1% to 99% relative humidity. This clock includes an instruction manual and an integrated hang hole for effortless wall mounting. The backlight requires four (4) D alkaline batteries; the clock requires one (1) AA alkaline or lithium battery (not included). Lithium batteries suggested for temperatures below -4°F/-20°C. Limited 1-year warranty.