1.3L Large Capacity: The cat water fountain has a capacity which can meet the water intake of cats, so that you can go out with confidence and enjoy a worry trip. There are and low water level lines marked in the water tank; please do not add water beyond the MAX mark line. 2. Quiet operation: The noise level of the water dispenser is 20 dB, so even if placed in the bedroom it will not affect sleep quality. 3. Portable power options: 5V input with a leakage protection plug and a power bank socket; a power bank can be used to power the fountain easily. 4. 3L large capacity water: With a 3L capacity, once a week refilling is enough; it does not require frequent refilling. Use scenarios Daily home use: Place the fountain in a quiet area or bedroom for silent operation, ensuring pets have a constant supply of fresh water without disturbing sleep. Travel and short trips: The combination of a sizeable capacity and portable power options enables use while away from home, reducing the need for frequent refills during trips. Apartment or spacelimited living: The compact 1.3L (and 3L) capacity options and low noise make it suitable for small living spaces, while the power bank compatibility supports flexible placement.