Description: Material: Plastic Size:11.1*7.5*7cm/4.37*2.95*2.75inches,11.1*7.6*6.47cm/4.37*2.95*2.55inches,11.1*7.6*3.5cm/4.37*2.95*1.38inches Color:as picture 1.Easy to add food at the top:The fish feeder can add a detachable fish food storage box on the top of the machine, and the total capacity can reach 430ML after installation. Add fish food at the top of the fish feeder without swallowing the food bucket, so you can easily increase or decrease the amount of food dispensed. 2.Easy to Install: With adjustable clamps, you can easily tighten the screws to fix the feeder on the aquarium, easy to assemble and disassemble. For closed aquariums, there are 4 protruding fulcrums at the bottom of the fish feeder, which can be directly and stably placed at the opening of the closed aquarium for feeding. 3.There are three cast appetites, each adapted to different coarse and fine grains. The diameter of fish food size should be less than 4mm/0.16inch. 4.WiFi Automatic Fish Feeder: Only supports connecting to 2.4GHz WiFi. Please make sure your home router can independently transmit 2.4GHz WiFi, as long as the fish feeder and 2.4GHz WiFi are successfully connected for the first time, even if the fish feeder loses the WiFi connection due to an accident, after recovery, the fish feeder will automatically reconnect to WiFi and go online. 5.APP Controlled Fish Feeder: Whether at home or away, you can easily control the feeding through your mobile phone. The APP can set a variety of flexible timing groups, allowing you to feed regularly and quantitatively every week or every day. It has a food shortage reminder function. When the fish food in the fish feeder is insufficient, a reminder will be pushed through the APP. You can also do instant manual feeding through the APP or by pressing the button on the machine. Support Android 6.0 or & IOS 9.0 or system. 6.WiFi Fish Feeder Power Supply:The smart fish feeder is directly powered by USB. Please Make sure there is an electrical outlet near the fish tank. The length of the power cord is about 1.5m/59 inches. 7.Only Use Timer Function:After the fish feeder connects to WiFi and successfully sets the timer, even if the connection between the fish feeder and WiFi is interrupted, as long as the power supply is not interrupted, it has a built-in independent clock, will still work according to the set time. (Tips: If the power supply is also interrupted, the built-in clock time will be wrong, you must connect to wifi to update the clock time, otherwise it will work according to the wrong time.) NOTE 1. As we know ,the different computers display colors differently,the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size ,you can feel to contact mewe will give you some suggestion,but it is for you reference only. 3.We could accept Mixed items,Colors And Sizes Order. The more quantities, the more Package include: 1 pcs* Auto Fish Food Dispenser