Features indoor and outdoor temperature and humidity displays, 12/24 hour clock with alarm and snooze, calendar with day of the week, month, and year, lunar phase, and a remote sensor that measures temperature in Fahrenheit and Celsius. Requires 4 AAA batteries (not included). Measures 4-1/2" x 5-1/2" x 1-7/8", remote sensor measures 2-3/8" x 3-3/4" x 1". Gift boxed.