The BioBrite SunRise Alarm Clock gently wakes you to a simulated sunrise rather than jarring you awake with a loud noise. Waking to the SunRise Alarm Clock can help you start the day in a better mood and feeling more refreshed.The SunRise Alarm Clock's gradual sunrise wakes you up gently and naturally. The clock's light slowly begins to shine 30 minutes before your wake-up time, gradually illuminating the room and becoming brighter until it is time for you to awaken. Alternatively, the clock's gradual sunset feature gives your body the signal to wind down, helping you to sleep. 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.