The aquarium auto feeder can set stable quantitative feeding, so you don't have to worry about being fed when you go out. Moisture resistance is improved, and the freshness and dryness of fish food is significantly prolonged even when the water vapor in the aquarium evaporates. The automatic fish feeder has an adjustable outlet, suitable for feeding a variety of fish feed, such as pellet feed, pellet feed, flake feed, bar feed, etc. You can choose a suitable feeding tank according to the feeding amount of the aquarium, avoid frequent feeding, and avoid food accumulation and dampness. Powered by 2 AA batteries, this model has a 100ml small feeding box and 210ml large feeding box, the clip-on feeder is suitable for open aquariums and the velcro fish feeder is suitable for closed aquariums. Yellow Product dimensions L x W x H 14.5 x 14.5 x 8.6 cm Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.