Product Name: AF-2009d Digital LCD Automatic Aquarium Tank Fish Food Feeder Timer with Retail Package Features and specifications: Maximum 4 feedings per day. Mini shape, space-saving for your aquarium Simple operation and installation, manual and automatic The logo "Lo" displayed on the LCD indicates the power is low By adjusting the slider, you may increase or decrease the amount of food dispensed per rotationSpecifications:Model: Resun A-2009DHousing: PlasticType of battery: 2 x AA batteries (not included)Attachment Method: retaining clips or Velcro fixedUnit dimensions (approx.): 11 x 10 x 7 cm (4.3 x 4 x 2.5 in.)LCD screen dimensions (approx.): 2.6 x 1.3 cm (1.1 x 0.5 in.)Feed box diameter: 6x3.5 cmPackage dimensions: 120 x 77 x 110 mmFeedings: Small particles (1.5) diets can be loaded with 70 grams, 5 grams each time, you can feed 14 times;Large particles (4.5) diets can be loaded with 40 grams, 2 grams each time, you can feed 20 times.Package includes:1 x Digital Automatic Aquarium Fish Food Feeder1 x Velcro1 x User manualNotice:Don't twist the feeding box by hand.Do not use rechargeable batteries.The logo "Lo" displayed on the LCD indicates the power is low. If batteries are not replaced after 3 days, the box feeder may stop in an inappropriate place. If LCD is displayed abnormally after completing batteries setting, please take out batteries and reinsert them after one minute. (it is not a malfunction of the feeder)