do I receive a update version since the previous comment . . hmm . I must have . First of all , I love this product and here 's why : -lrb- I be listen to Rainforest as I write this , and I be in heaven -rrb- there be a volume range you can adjust for the sound from from 1 - 8 range . I only need to set mine at 2 for a audible , yet gentle and clear sound in my bedroom . this machine can be use in a small room to a large , spacious room with the range capability . you can adjust the backlight brightness on the display to 3 setting : hus , Med , or Lo there be also a Daylight Savings Time button on the back that can be activate . the 20 different sound to choose from be generous compare to other nature sound product . the sound be clear with combined layer of soft background to up front stronger sound - very accurate and realistic you can set a timer for sound if you choose and the sound will automatically stop at the end of the time . two separate alarm setting -lrb- can choose a sound or a beep alarm -rrb- the price be very , very affordable ! product be lightweight and sturdy , compact to fit gracefully on a small bedstand , sleek and well balanced . to parent with newborn : there be a heartbeat sound ! what more can I say ... sharper image produce another quality product . I previously have a expensive wooden chime alarm clock , and when the chime begin to sound like a low clunk after two year , it become almost worthless , except for the digital clock image , so live and learn ! I be jubliant and satisfied that I find a even better product with so many feature and sound option ...