Quantity: One Set Cell Type: 18650 Lithium Battery Rated Voltage/Capacity: 3.7V 1800mAH Solar Voltage power: 6V Solar current: 420MA Process: PET lamination Air pump type: AC air pump Rated voltage : 3.5 V Maximum current: 450 MA Bath sound: 50 dB Minimum air flow: 1L/min Operating voltage range: 3.0V-4.25V Maximum operating current: 450MA Over-discharge protection voltage: 3.0V Charging protection voltage: 4.25V Working time: about 22 hours Whether with light control: without light control light Product weight: 0.65 kg Product size: 21.5 x 17.5 x 7 cm. Silent oxygen pump . Ideal for outdoor aquariums, ponds or fishing. Solar oxygen pump, no batteries or plugs required, economical and environmentally friendly. Comes with 2 hoses, 2 air stones and a connector. 3.7 lithium battery V 1800mAh 18650 built-in to store electricity, so the oxygen pump can also work at night. Dual airflow is easy with the included [Y] connector. 50dB low noise oxygen pump. Ideal for outdoor aquariums, ponds or
