Feature: 1. SAFE MATERIAL: Made of premium plastic material, environmentally friendly and safe, easy to replace, suitable for all types of water, no effect on water quality. 2. SEPARATION DESIGN: Fish waste segregation box design, segregate impurities and waste, effectively improve water quality, suitable for fish tanks and aquariums. 3. FILTER COTTON: One more layer of filter cotton for better adsorption of impurities, with internal filter propeller, anti seize, also has stronger wave making function. 4. SILENT OPERATION: Strong suction, low noise, silent operation, will not disturb the fish, need to connect the air pump (does not contain) to use, not recommended for use in fish tanks with sand. 5. EASY INSTALLATION: Simple and quick to install, allowing you to set up the internal filter in your fish tank with ease and convenience. Specification: Item Type: Aquarium Filter Material: Plastic Applicable Fish Tank: Within 80cm Matching with Air Pump: About 6W(not included) Size: Approx. 25.5x6.8cm / 10.0x2.7in. Package List: 1 x Aquarium Filter Note: 1. Use must be below 3CM below the water level, use with air pump (not included).2. All data are measured manually, and there are certain errors in the measurement results.