A hard turtle shell casts a restful aquamarine glow as the light projector creates a serene underwater effect with soft undulating waves on ceiling and walls. The sound machine offers two soothing options, gentle ocean waves and a tranquil melody. Adjustable settings for brightness, movement, and volume create a fully controllable experience. A 23-minute timer insures darkness and silence for deeper sleep. For best effect, place Tranquil Turtle on the floor in the center of the room. Requires and comes equipped with three AA batteries. Consistent, gentle rituals serve as a transition to bedtime. Switching on Tranquil Turtle signals time for sleep.