DC 3V Micro Vacuum Pump Mini Air Pump Suction Negative Pressure Pump

Best and High quality.

DC 3V-6V Micro Mini Pressure Oxygen Air Pump Aquarium DIY.

Mini Air Pump.

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Weighing only 15g, you can use batteries or lithium batteries. The higher voltage, the current, noise and volume will be higher. It can be used for fish fresh oxygen. Warm tips: it will be better to control the noise to use relatively low-voltage, also good for the use of this air pump.