Aboiled Fishing Aquarium Fish Tank Breeding DC 12V Mini Air Pump Water Oxygen Pumo Pump Motor PWM Volume Control

High quality carbon brush, pure copper movement Noise: Low speed state: around 50 decibels; High speed state: around 65 decibels which is very power saving, so that the battery power can be used for a longer time, which also greatly extends the life of the motor and prevents the fish from being overcharged with oxygen. Adopting pure copper movement, high-quality carbon brush has a longer lifespan, and the white pump head is waterproof and not afraid of water backflow