Feature: 1. Organic Energy: Solar oxygen pumps, which do not require additional batteries or plugs, are very easy to use and save energy. 2. Adjustable Angle: The angle of the solar panel can be adjusted to get enough solar energy. Solar panels can be attached to the floor or mounted on the wall. 3. 3 Working Modes: Strong, medium and weak. Fully meet every occasion and need. You can adjust the working mode according to different usage scenarios. 4. Multi Purpose: Widely used in various fish tanks, swimming pools, ponds, aquariums to increase fresh air, to meet your different use needs. 5. Note: The package comes with 1 long air pipe instead of 2 or 3 short air pipes. Cut it into 3 pieces as needed and connect with the Y connector. Specification: Item Type: Solar Air Pump Weight: 1230g/43.4oz Material: ABS and polysilicon Use: solar oxygen pump Battery Type: Lithium battery (shipped with built in battery) Battery Model: 18650 Battery Capacity: 2400mAh Solar Voltage: 10v Output Power: 8w. Package List: 1 x Solar Oxygen Pump1 x Hose2 x Accessories4 x Screw4 x Expansion Tube2 x Bubble Stone 1 x Instructions 6 Small Pieces x Bracket