Description: This is a high quality aquarium oxygen fish air pump. Made of high quality ABS material, it's tough and durable to use. Powerful, high output pumps fulfill most aquarium air requirements and are built to ensure years of dependable, trouble-free use. Perfect air pump to add water movement and oxygen in the fish tank to increase the health of water and give your fish a comfortable environment . Features: Made of high quality ABS material, tough and durable. Elegant color and stylish design. Powered by solar energy, no battery or electricity needed, energy-saving and environmentally friendly. Built-in 1800mAh high capacity battery, it can work for a long time up to 22 hours once it get fully charged. Technologically advanced design offer smooth, quiet operation. Powerful, high output pumps fulfill most aquarium air requirements and are built to ensure years of dependable, trouble-free use. Perfect air pump to add water movement and oxygen in the fish tank to increase the health of water and give your fish a comfortable environment, improving the overall health of the aquarium. Specification: Condition: Brand new Type: AC air pump Material: ABS Battery: 3.7V 1800mAh 18650 Lithium battery(Included) Working voltage: 3.0-4.25V Working hour: About 22hours(Fully charged) Solar panel: 6V/2.4W/420MA Dimmable control: No Air pump: Rated voltage: 3.5V Maximum current: 450MA dB: 50dB Minimum air flow: 1L/min Size: 9.1 x 17 x 2.1cm / 3.58 x 6.69 x 0.83inch(Approx.) Package Included: 1 x Aquarium Air Pump 1 x Solar panel 1 x Accessories package 2 x Air stones 2 x Tubes 1 x User manual Working Mode: Mode 1: High gear (green light always on) Mode 2: Low gear (dark blue light is always on) Mode 3: Low gear open 10 seconds stop 10 seconds. (Sky blue light is always on) Instructions for Use: Connect the air stones with the exhaust hole and put it into the water which needs to be oxygenated. Solar cells are facing the sunlight. There is no shield between the solar cells and the sunlight. Press the POWER switch and the aquarium air pump will start to work. Note: 1. This product is an electronic product. The aeration part of the device can not be put in water and the diversion hole can not be blocked. 2. This product is a solar energy product. The charging speed is related to the intensity of sunlight. Regular cleaning of dirt on solar cells can improve the charging efficiency. 3. Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. 4. Please understand that colors may exist chromatic aberration as the different placement of pictures.