Feature: 1. Increase Oxygen: Aquarium air pump can produce dense bubbles to increase oxygen levels and promote the growth of fish and water plants. 2. Purify Water Quality: In addition, the aquarium filter can filter and break down impurities to keep the fish tank water clean. 3. Silent: Quiet oxygenation, air driven, will not cause disturbance, oxygen pump has anti vibration feet, minimal noise, no disturbance to your life. 4. Adjustable Air Flow: The air control valve is perfect for regulating the amount of oxygen, simply turn the knob to easily increase or slow down the airflow. 5. Compact Design: Fish tank filter air pump kit, very compact design, will not take up too much space, easy to install and use. Specification: Item Type: Aquarium Filter Air Pump kit Material: Plastic Filter Size: Approx. 8 x 8.5cm / 3.1 x 3.3in Use: Aquarium Fish Tank Filtration, Oxygenation Pump Oxygenation Pump Power: 3W Oxygenation Pump Air Volume: 3L/MIN. Package List: 1 x Aquarium Filter 1 x Connecting Accessories1 x Air Pump1 x Instruction Manual1 x Hose Note: Manual measurement, please allow some errors.