The Sunrise System Alarm Clock model SRS100 is a wonderful, natural alarm clock.  Just plug it in to your bedside lamp, set your preferences and enjoy the ultimate, natural awakening.  Your lamp will reach full brightness at the time you have chosen, mimicking a morning sunrise

You can choose to wake up to the gradually brightening light or also set the alarm sounder which gradually increases in volume to wake you gently and naturally.

• Height: approx 4.5 inches, Width: approx 5 and 1/8 inches, Base depth: approx 3 inches, Top depth: approx 1and ¼ inches
• Simulates a sunrise over a period of 15, 30, 45, 60, 75, or 90 minutes; Simulates a sunset over a period of 15, 30, 45, 60, 75, or 90 minutes
• Handles lamps up to 200 Watt bulbs
• Optional alarm sound
• 7 day programmable alarm
• Snooze button
• Random security light option
• Dim your bedside lamp to read or watch TV.

Kym -
I have so much more energy in the morning using this alarm. It never fails to wake me up either. The snooze function is totally unhelpful though, because the light has to be fully on before you can activate it. Apart from that it's wonderful.