Features: Strengthen your subaqueous ecosystem with this USB powered aquarium engine featuring a high efficiency filtration structure that removes impurities while creating mesmerizing fountain effects for optimal water oxygenation. Designed with noiseless production technology and versatile USB connectivity, this plastic fountain filter combines low noise execution with easy force sourcing from outlets, power banks, or computers. Ideal for aquarium enthusiasts and homeowners seeking to maintain healthy fish habitats or raise outdoor pond aesthetics with dynamic water features. Perfectly suited for backyard carassius ponds, indoor ornamental fish tanks, or decorative water gardens requiring continuous water dissemination and visual enhancement. Its quick install design and removable filter media simplify maintenance, ensuring permanent distinctness for dynamic subaqueous creatures and engaging water displays. Specifications: Substance: Plastic Product category: Filter cotton/filter, Specifications: ZY-N52+3 original cotton, ZY-N52+3 original cotton, ZY-N54+3 original cotton Package Includes: 1 set of x USB filter engine note: Please allow 1-3cm errors due to manual measurement. Due to the difference betweeen different monitors,the picture may not reflect the actual color of the item.