FLEXIBLE MEAL SCHEDULING - The programming is straightforward, and you get a lot of flexibility to set specific meal times and portions. The hopper holds up to 6 L of dry food. You can then program the timer to dispense up to 4 meals a day. Set a specific time for each meal and how much food will be dispensed for each meal time.LARGE CAPACITY HOPPER - DOGNESS feeder comes with a massive 6 liter hopper. When filled with pet food, it can last a few days to a week depending on how much your pet eats. This is great for pet parents with a very busy schedule or singles who travel for days at a time. With this unit, you can only use dry food with kibble between 0.2 and 0.6 inches in size. This ensures that food is dispensed smoothly without jamming.DUAL POWER SUPPLY - The feeder's backup battery(not included) can continue to execute the feeding plan in case of power outages.QUICK AND EASY SETUP - With a few clicks on the easy-to-use LCD screen, you can set the time and amount of each meal for your petsBUILT-IN SPEAKER - With built-in advanced speaker, you can record a customized voice massage to alert your pet every time you dispense meal for them.