This feeder has a countdown timer. Allows you to set up to 1 meal within 48 hours. Each tray can hold up to 300ml of pet food. Conveniently feeds your pet whether you are at home or away. Great for portion control and establishing eating routines. The Battery powered automatic dog & cat feeder requires a AA battery (not included). The detachable bowl tray can be cleaned easily like any normal bowl. Dishwasher safe.