RE-RECORDABLE Musical Singing Plush Calico Cat - 15 inch Tall Sound Box can be recorded from videos, sound files (any format), voice recordings, phone messages, etc No software required - works with any device such as Mac, PC, Iphone, Ipad, Tablet, Android, MP3 player, etc Re-recordable up to 210 seconds. Re-record as many times as you wish. Record a favorite song, a personal message, or a childrens book  the possibilities are endless! Operated by 3 AAA batteries (NOT INCLUDED). Once batteries die, replace them and unit will continue to play already recorded files. No re-recording required. Unit will play only one file