<span>If you've been looking solar oxygen pump, then your search is over! That's because our solar oxygen pump is carefully prepared for you. Using premium material, it will meet your needs. It can be used for most occasions.</span> Features -Color: Black -Material: ABS, <span> Silicon, Plastic </span> -Size: <span>21.50X17.50X7.00cm/</span><span>8.45X6.88X2.75in -Designed for solar energy charging, no need to connect to the power supply, the use of solar energy charging, energy saving. -Adopt compression system and shock-absorption system, noise reduction design. -It has the characteristics of small size and light weight, easy to carry out. -It is widely used for aeration of various ornamental fish, aquariums, fish lovers, company fish tanks, and family fish. -Premium material and fine craftsmanship, durable and sturdy long time. <b>Specification</b> -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 -Minimum Flow Rate: 1L/min -Operating Voltage Range: 3. -4.25V -Maximum Operating Current: 450MA -Discharge Protection Voltage: 3. -Charging Protection Voltage: 4.2V -Working Hours: about 22 Hours -Light Control or Not: No Light Control</span> Package list: 1 x Solar Panel with Stake 1 x Current Converter 2 x Sets of Expansion Screws 2 x Hose Aerobic Stones