Package dimensions: 20.6 x 7.6 x 7.2cm; 260 grams Number of units per item: 1 Requires batteries: No The smart fish feeder can set timed and quantitative feeding, which helps your fish keep healthy. Suitable for different kinds of fish food, such as microdiet, flake food, pellet food and bar food. Two installation methods, can be installed by mounting clip or Velcrob fastener Our fish feeder supports manual feeding / automatic feeding, you can choose what you want The automatic fish feeder can set 12-24 hours feeding per day. Accurate timing and regular feeding help keep your fish healthy See-through feed tank allows you to keep track of remaining feed level. This tank can then be refilled to avoid running out when you are not available to refill A desiccant can be placed in a dry box under the top cover to keep fish food dry The base of the fish feeder can be rotated 360 and can be rotated to a satisfactory position after installation Specifications Color: Green Appropriate diet: Suitable for a variety of feeding shapes, the opening of the feeding box can be adjusted for a variety of feeding size (medium, small, micro, fine, slice, etc.) Feeding: 2 x AA Batteries (batteries are not included) What you get 1 Manual 1 Automatic Fish Feeder 1 Mounting Clamp Warm Tips S please do not twist the food container manually