I be a bit skeptical of this mobile mostly because it look so large in the picture , and also because I think I probably want a mobile that play lullaby instead of classical music . however , when I see this on clearance at Walmart , when my son be 5 month old , I decide to try it -- and now only regret I do not get it sooner ! it be definitely a large mobile , but that become a non-issue , and the classical music be great . the leaf and animal move slowly and calmly but have interesting color and feature , which keep a baby 's interest while not be over-stimulating . there be four sound option -lrb- rainforest and three different classical composer -rrb- , which if select will run for about 15 minute each before automatically shut off . no frequent resetting and no winding-up necessary -- a definite plus . there be three option for light\/music , light\/music\/motion , and music\/motion , so it be not possible for the mobile to work with just motion and no sound , but you can have the nightlight off . the music be slow-tempo , soothing and relatively quiet and have help my son fall asleep countless time over the past six month . we remove the mobile arm as soon as he could stand up , and switch the music\/light\/motion option at just music and light . he absolutely love push the big , colorful button to turn the music on and off by himself . Practical note : my initial set of d battery be still go fine after six month , so they do not need frequent change . the mobile be easy to assemble and it be easy to detach the mobile arm when need . the only negative be that the on\/off remote never seem to work for `` on '' for I -- only `` off '' -- even when align as instruct . highly recommend .