... connect to Computer to download soundSupport mp3 and wmv sound fileFlash memory: 8 ,16,and 32MB,64MBFunction: ON/OFF switch, light sensor ... , motion sensor, Next song, Pause, volume+, volume- and etcComponents: plastic shell, PCB, flash, mini speaker, battery, USB cable ... x 25mm or any other custom sizeApplication: personalized plush toy, alarm clock, postcard, tags and etc.