R2 is a sound machine and night light combination device,It produces sound loud enough to block and mask outside noise which can help you sleep better or focus on your work more. The light is bright enough for you to find your way around your bedroom at night. Easy to use, you can customize the color, brightness, sound, and volume level. Set a timer to turn off automatically in 1,2 or 3 hours. Separate or coordinate sound and light based on your needs; sound and light settings are saved. 31 high quality sounds, 7 kinds of noise from white to brown, pink noise, 7 different fan sounds, 17 relaxing natural sounds:gentle waves,lullaby, summer night(crickets), music box, rain, campfire, ocean waves, fetal, pendulum clock ticking, train, forest(birds), stream, thunderstorm, heart beat, drip-drop, wind, shush.