Practical automatic feeder: automatic feeding for aquarium fish     For all granulates from 1.0 to 3.0 mm Easy to set: up to 4 feeds per day with individual food quantities. Holds up to 125 ml and can be extended to 375 ml by screwing on a 250 ml food tin On Off switch for manual operation, easy adjustment of feeding times and quantity Air connection to keep the food dry, universal mounting by suction cups or mounting clamps (can rotate 360   on the mount) Package contents: automatic feeder for aquarium fish with mounts and 3 x 1.5 V AA batteries