Please note, this item ships from an international seller. Expected delivery is 10-15 days. 1PC Pet Flower Water Fountain Automatic Electric Circulating Replacement Filter Feature Compatible with pet Water Fountain 1.6 L Flower Style Drinking Fountain Remove impurities and odor, keep the water tasting fresh Longer lasting filter requires less frequent changes than conventional filters Suggest replacing Charcoal filters every 2 to 4 weeks to keep the water clean size:12.5 cm * 12.5 cm * 1.0 cm Package included: 1X Replacement Filter