Programmable features include the ability to set different dawn and dusk cycles ranging from 15 to 90 minutes, so you can choose the best option for you. Intelligent LCD digital display fades to a very low level when you want to sleep. Nightlight option fades to 10% rather than complete darkness. Dimmable bedside light for reading or soft lighting. Opal glass globe emits a soothing glow. Optional backup beeper alarm for reassurance along with snooze control.