Fish Tank Charging Mini Silent Oxygen Pump

Product information:
Specifications: YJ-301 intermittent operation for 50 hours / with a built-in 2 cm air stone; YJ-301 intermittent operation for 50 hours / with a built-in 4 cm air diffuser; YJ-301 intermittent operation for 50 hours / with a 5 cm nano disc; YJ-302 intermittent operation for 70 hours / with a 2 cm air stone; YJ-302 intermittent operation for 70 hours / with a 4 cm air diffuser; YJ-302 intermittent operation for 70 hours / with a 5 cm nano disc; YJ-303 with three-speed settings and 70 hours of intermittent operation / with a 2 cm air stone; YJ-303 with three-speed settings and 70 hours of intermittent operation / with a 4 cm air diffuser; YJ-303 with three-speed settings and 70 hours of intermittent operation / with a 5 cm nano disc.
Material: ABS
Power: Rechargeable