This sunrise alarm/sound machine is wonderful! I fall asleep faster and easier; stay asleep thanks to the river sounds; and wake up "naturally". No need for a jarring alarm in the morning!!It was a little difficult and time consuming at first because I wanted to test all the color and sounds, but once I found the right combo, no tweaking necessary!And you can set several different alarms! Say you work out M,W,F and need to wake up earlier .. easy peasy! And the weekends? Ho boy! Time the sun to rise at your perfect time.You can even set the alarm to not make a sound. Just wake up to your perfect sunrise!