This application is created for setting your preferred sound volume with the easiest and simplest operation in your hand. You can save the maximum 6 patterns of sound volume and recall easily the preferred sound by just pushing one bottom anytime. Also, you can set the clock timer and ring the favorite saved sound automatically. Timer setting: single day/reserved day/everyday - To prevent the sound setting from unsetting manner mode in train or workplace- To make the sound volume larger before the alarm clock rings- To save the sound volume patterns for checking music and live images If you want not only the volume control device, but with scheduling function, please try out this product, volume scheduler.