Item Type: Automatic Fish Feeder Material: ABS Battery: 2 x AA Batteries (Shipped Without Batteries) 1[Timing] Automatic fish feeder, the daily feeding amount can be adjusted and controlled according to the actual demand, every 12 hours or 24 hours automatically feed. 2[Selectable Capacity] With a large capacity feed tank of 210ml/100g/3.5oz and a small capacity feed tank of 100ml/50g/1.8oz to choose from, the automatic fish feeder can meet various needs. 3[Battery Powered] The automatic fish feeder is powered by 2 AA batteries (not included), which can last for 2?4 months. The ideal helper for aquarium lovers on holiday trips or busy working hours. 4[Applicable Time] Whether you're at home or on the go, this automatic fish feeder is perfect for everyday use. Even if you are traveling, you don't have to worry about feeding your fish. 5[Fresh And Dry] The hopper keeps food fresh and dry without getting wet or stuck. Fish food dispenser is suitable for all kinds of fish food, such as flakes, pellets, powder and strips.1. The product has a built in electronic circuit, which cannot be dropped into water 2. The battery is 2 x AA batteries 1 x Automatic Fish Feeder 2 x Feeding Can 1 x Fixed Base 2 x Screws