Natural Dawn Simulator Alarm Clock Light Box 10,000 Lux LED light box, sunrise / sunset Sunrise: the simulates a sunrise over a period of 0 (off), 15, 30, 45, 60, 75 or 90 minutes seven day alarm, large backlit LCD display, night light security feature, 12 or 24 hour clock display, Power fail backup Easy to read text display, Lightweight and portable, Low power, energy efficient