Bodyclock Spark 100 is an alarm clock that mimics a real sunrise so when you open your eyes you feel properly awake and refreshed. Waking like this helps to regulate your sleep-wake cycle and has even been shown to boost mood, energy and productivity levels for the rest of the day. A fresh look and simple programming make Bodyclock Spark 100 the ideal choice. It has the essential 30-minute sunrise and sunset plus a couple of popular customisations; choice of final light intensity for the sunrise and a nightlight option for the end of the sunset – great for kids. It provides fully adjustable bedroom lighting, bright for reading or a relaxing soft glow. As your room gets dark, the light-sensitive display switches off to help you relax. Tap-control snooze is another nice touch. A sleep/wake light like Bodyclock Spark 100 can help beat the winter blues and is a useful complement to a lightbox in treating SAD (Seasonal Affective Disorder), making it a Class 1 medical device.