Power and anti-clog design The feeder runs on a 5V/1A adapter and can use an optional set of three No.5 dry batteries (not included) to prevent feeding interruptions. It features a patented anti-clog mechanism that prevents jams with kibble sizes from 3 to 8 mm, ensuring reliable dispensing every time. Capacity and materials 4 L capacity holds up to 120 servings (about 1.45 kg) of dry food, suitable for multi-day use. Constructed from BPA-free ABS for safety and durability, it includes a removable FDA-grade 304 stainless steel bowl for secure and easy cleaning. Scheduling and manual feeding Programmable for up to four timed meals per day via a simple control panel. The minus button can be double-tapped to trigger instant manual feeding, useful for training or rewards. Cleaning and maintenance All food-contact parts (stainless steel bowl, storage drum, base) detach for quick washing. The exterior wipes clean with a damp cloth; no harsh chemicals needed. Use scenarios - Busy workdays: program four meals on a daily schedule to maintain your pets routine without constant supervision. - Multi-day trips: large capacity minimizes refills when you are away for several days. - Training and rewards: use the manual feed function to provide treats or quick rewards between scheduled meals. This description preserves the original product features and specifications while presenting clear, practical benefits and use cases in plain ASCII.