This smart pet water fountain features advanced stainless steel and ABS engineering plastic construction, available in ABS model, ABS+stainless steel model and full stainless steel model to meet different pet household needsEquipped with efficient 5-layer filtration system including activated carbon layer, ion exchange resin and precision filter cotton, effectively removes impurities, residual chlorine and odors ensuring clean safe drinking water Ultra-quiet pump technology operates with minimal noise, won& 39;t startle sensitive cats and dogs, especially suitable for nighttime use Smart flowing water circulation design mimics natural spring water movement, increases oxygen content in water, stimulates pets& 39; drinking interest and effectively prevents urinary system diseases and kidney problems Wireless charging and USB dual power supply modes offer flexible placement options, 2L large capacity tank reduces frequent refilling needs Automatic power-off protection and dry-run prevention design ensure safety, stainless steel surface is scratch-resistant and easy to disassemble clean Optional filter cartridge packs (Filter*2 or Filter*5) available for regular replacement maintaining optimal filtration performance, ideal choice for pet health care