1. Material: plastic 2. Rated power supply: 220-240V/50Hz 3. The card slot is made of ABS, which is sturdy and durable 4. Anti-corrosion acid and alkali resistant black hose, total length 0.8 meters, diameter 16 mm 5. The bottom filter screen cover design prevents small fish from entering the pump by mistake during the operation of the pump 6. With a rotary button to adjust the oxygen output 7. The card slot is equipped with a suction cup holder, suitable for all kinds of fish tanks 8. Weight: JP-500G 0.35kg; JP-700G 0.5kg; JP-900G 0.65kg; JP-1100G 0.7kg; JP-1500G 0.85kg