Features: 1¡¢EASY TO ADJUST: The oxygen boost pump has large air volume, and the air volume can be adjusted to meet more needs, has a wide range of applications. 2¡¢LOW NOISE: The pump has double soundproof chamber and uses an environmentally friendly material shell to eliminate the source of sound. 3¡¢STRONG POWER: Using durable vibrating leather cup, the oxygen pump has more air volume, quieter operation, provides a steady stream of strong power. 4¡¢COPPER MOVEMENT: The use of all copper movement ensures low loss and low heat generation when the pump is running, and extending its service life. 5¡¢WIDE APPLICATION: Portable design, this adjustable oxygen pump is suitable for home fish tanks and aquariums, etc., which is efficient and durable. Package included: 1 x Oxygen Pump