Feature: 1. Compact body and large volume, 50L/min strong volume, uniform bubble, obvious effect of oxygen addition. 2. Mute design, energy and power saving, durable and long service life. 3. Automotive class damping buffer soft cushion, reduce the resonance generated by the working vibration of the motor. 4. Reasonable structure and close design, enlarge the air outlet, even bubble, the oxygenation effect is stable. 5. High strength and high toughness rubber hose, resistant to sun exposure and low temperature. Specification: Condition: 100% Brand New Item Type: Increasing Oxygen Pump Model: DB-58 Material: ABS Color: As Pictures Shown Power: 25W Flow: 55L/min Air Pressure: 0.045MPA Voltage: 220V Plug: CN Plug Size: Approx. 135x130x70mm/5.31x5.12x2.76inch Package List: 1 x Increasing Oxygen Pump1 x 6 Head Shunt1 x Hose Note: 1. When the air pump is working Because the implementation of the magnet in the process of transportation, due to the vibration caused by the implementation of the magnet and the notification of the magnet dislocation, there may be a greater sound when running, as long as pick up the air pump in the thick place knock a few times can be reset, restore mute.2. Air pump volume is smallCheck the installation direction of the check valve first. The opposite direction on the check valve will lead to a decrease in air output3. Small bubblesRemove the connection between the airstone and the air pipe, then soak the airstone in hot water for about five minutes, and then it will burst into oxygen, or the problem caused by the type of airstone itself, you can consider replacing the airstone.4. The air pump can be submerged in water?This product does not have waterproof function. When using it outdoors, please take good waterproof measures to prevent water leakage or leakage of air pump