Flow 4L per minutes, adjustable airflow, for 60-100L aquarium. This air pump adopts the latest technology to make it ultra-quiet in operation, Minimum 25dB, just like standard rusty leaves or a ticking watch, very quiet. Traditional and reliable mechanical air volume adjustment, much less shaking and no electric field fluctuation, much safer than electronic adjustment, much more reliability. The air filter cotton is easily replaceable, maintaining clean oxygen supply to your aquarium, while ensuring a more stable gas output. The air volume is adjustable inside, this feature let your fish have a comfortable environment, because different fish, different tanks, even different seasons require different air volume Specification : Condition: Brand New White color Material: ABS Oxygenation holes: 2< /p> Frequency: 4 L/min Voltage: 220V-240V Power: 3W Size: 1065.5 cm< /p>
