NightWave(TM) sleep assistant - Travel Version: Be Rested for Tomorrow's Meeting! NightWaveTM helps you fall asleep by guiding you in a proven relaxation process as you lie in bed. NightWaveTM projects a soft, slowly changing blue light on the ceiling or wall of your darkened room. By synchronizing your breathing with the light, your body and mind enter into a state of relaxation that grows deeper and deeper. The next thing you know... it's morning! Recommended by sleep specialists. Includes carrying case and battery. Combat insomnia without drugs by using this simple product which promotes our bodies natural sleep mechanisms.