This color-changing alarm clock has an easy-to-read digital display with time, month, date, day and temperature. It features seven soft, soothing colors that continually change to create an ambiance of tranquility and five soothing nature's sounds to help you fall asleep and wake up. Req. 3 "AAA" batteries (sold separately). Plastic. 4 1/2"Dia. x 3 1/2"H.