Wireless Sensing Pet Fountain: The PET MARVEL F2 pet water fountain comes with a 5000mAh lithium battery and is best used with a 5v1a/5v2a charger. Equipped with a sensing mechanism, the dispenser automatically provides water when a pet approaches. In this mode, the battery can last about 40 days, making it convenient for travel, work, and business trips. Additionally, you have the option to power it using an electrical outlet for continuous water dispensing. Large 7L Capacity: With a capacity of 1.8 Gallons/230 oz, this dog fountain is ideal for small to large dogs, cats, and multiple pets. Its wide drinking area encourages pets to share the water, while the top tray, featuring a depth of 1.2 inches, effectively prevents water spills, keeping the floor clean and dry. Additionally, the bowl is designed with a 350 ml emergency water supply for use during power outages. Safe Food-Grade Material: Crafted from premium 304 stainless steel for the water bowl and BPA-free, food-grade ABS resin for all components, this dog water dispenser guarantees safety, hygiene, and durability. Its user-friendly design ensures easy opening and cleaning. With a 7-8 inch height, the fountain ensures that pets maintain a comfortable drinking posture while staying hydrated.