Anself 5V Solar Power/DC Charging Oxygenator Fish Tank Aquarium Air Pump Fishing Oxygen Pump Aerator with Air Stones This product is an oxygenator powered by a solar panel and also can be charged by a power adapter with the USB charging cable. It does not require any wire connection, ensuring a quick and easy installation. It helps to increase oxygen levels to fishes when fishing or in fish tanks, aquariums. Features: AC/DC oxygen pump, adopt pure copper movement and advanced single-chip intelligent control. Built-in 3.7V 2200mAh lithium battery, charging via USB interface. Constant voltage/current charging, over charge and over discharge protection, low battery alarm. Folding design to combine solar panel and pump in one, portable and low noise for use. No wiring needed, ensuring a quick and easy installation. Widely used for a variety of ornamental fish, aquarium, company aquarium, etc. Especially great for power outage emergency, as well as oxygen pump for wild fishing, small amounts of aquatic transport. Specifications: Solar Panel: 5V / 1.4W Charging Input: DC 5V / 1A Battery: 18650 Li-ion 3.7V 2200mAh Air Pump: 3V / 0.5W Min. Air Flow: 0.3L/min External Air Stone Dia.: 5.1mm Air Pipe Outlet Dia.: 4.4mm Air Pipe Length: Approx. Long: 100cm(1pc); Short: 30cm USB Cable Length: Approx. 100cm Working Power Range: 3.2V-4.2V 90mA Low Power Indication Voltage(flash in green): 3.3V Full Power Indication Voltage(red): 4.0V Over Charge Protection Voltage: 4.2V Working Time: Approx. 20 Hours with fully charged battery Product Size: 120 * 78 * 40mm / 4.72 * 3.1 * 1.57in Product Weight: 324g / 11.43oz Package Size: 13 * 10 * 8.5cm / 5.12 * 3.94 * 3.35in Package Weight: 456g / 16.08oz Package List: 1 * Oxygen Pump 3 * Air Pipe(2 long and 1 short) 2 * Air Stone 1 * USB Charging Cable 1 * User Manual (English)