Suitable for the need for outdoor fish fishing use! It is portable and easy to carry, It is a wide range of use of fish tank. Small size, low noise, large volume, long life. Great fish tank, aquarium and fishing air pump. Solar is practical. Features - Color: As shown. - Material: Plastic. - Size: About 15x13x5cm. - Solar panels: 5V/1W. - Battery: 3.7v /3600mAh lithium battery. - Charging time: solar charging for about 20 hours. USB charging for about 5 hours. - Rated air pump voltage: 3.5v. - Air pump maximum :150MA. - Air pump bath sound: <60dB. - Maximum atmospheric flow: 1L/min. - Minimum atmospheric flow: 0.5/min. - Operating voltage range: 3. -4.25v. - Maximum working : 150MA. - Discharge protection voltage: 3. . - Charging protection voltage: 4.25v. - Working mode: 3 levels (continuous high level oxygenation, continuous low level oxygenation, intermittent oxygenation for 10 seconds, stop for 10 seconds, repeat cycle). - Universal solar power supply, fashion oxygen pump. - Oxygen is easier to be out, fine workmanship, not easy to break. - High-performance, this air pump is for small and medium-sized fish tank. - Low noise design is safe and practical for fish. - Suitable for fish tank, aquarium, or outdoor fishing. Package list: 1 x Oxygen Pump