Description Do you want to have a practical solar oxygen pump? If so, our solar oxygen pump is carefully prepared for you. Premium material and simple operation make it to be a perfect choice for you. You can also give it to your family and friends. Features -Color: Black -Material: ABS, Monocrystal Silicon, Plastic Pipe -Size: 21.50X17.50X7.00cm/8.45X6.88X2.75in -This product is made of premium material, which can be use for a long time. -Adopt quiet design, will not disturb the neighbor, low noise work. -It is especially suitable for emergency oxygen increase during power outage. -Lightweight and small, this pond pump is more convenient to operate. -It can provide oxygen to freshwater fish, sea fish and other fish, in the tank, aquarium, pool and other fish breeding farm, family, research and other circumstances to show their skills. Specification -Battery: 18650 Lithium Battery -Nominal Voltage/Capacity :3.7V/1800mAH -Solar Voltage :6V -Solar Current :420MA -Air Pump Type: AC air pump -Rated Voltage: 3.5V -Maximum Current: 450MA -A bath Sound: 50 db -Minimum Flow Rate: 1L/min -Operating Voltage Range: 3.0V-4.25V -Maximum Operating Current: 450MA -Discharge Protection Voltage: 3.0V -Charging Protection Voltage: 4.2V -Working Hours: about 22 Hours -Light Control or Not: No Light Control This product is made of premium material, which can be use for a long time. Adopt quiet design, will not disturb the neighbor, low noise work. It is especially suitable for emergency oxygen increase during power outage. Lightweight and small, this pond pump is more convenient to operate. It can provide oxygen to freshwater fish, sea fish and other fish, in the tank, aquarium, pool and other fish breeding farm, family, research and other circumstances to show their skills.