Features: 100% brand new and high quality. This product is an oxygenator powered by a solar pane and also can be charged by a power adapter. It does not require any wiring, ensuring a quick and easy installation. It helps to increase oxygen levels to fishes when fishing or in fish tanks, aquariums. The solar panel should be placed in a well lit area to ensure enough sunlight exposure. It can be connected to the main unit before the air stones are dropped into the pond. Specifications: Color: white Package Size:125*95*80mm Solar panel: 5V 290MA Battery: 18650 Li-ion 3.7V 2200mAH replaceable Pump: DC micro air pump, 1.8V 150MA Sound: 50dB Minimum air flow: 0.3L/min Air pipe outlet size: 4.4MM Product working power range: 3.2V4.2V 90MA Low power indication voltage: 3.3V Full power indication voltage: 4.0V Over charge protective voltage: 4.2V Working time on fully charged battery: around 20 hours Charging method: with solar panel or 5V/1A power adapter Package List: 1 x Solar Air Pump Notes Due to the difference between different monitors, the picture may not reflect the actual color of the item. the style is the same as shown in the pictures. Thank you