Item Type: Solar Air Pump_x005F_x000D_Weight: 1230g/43. 4oz_x005F_x000D_Material: ABS and polysilicon_x005F_x000D_Use: solar oxygen pump_x005F_x000D_Battery Type: Lithium battery (shipped with built in battery)_x005F_x000D_Battery Model: 18650_x005F_x000D_Battery Capacity: 2400mAh_x005F_x000D_Solar Voltage: 10v_x005F_x000D_Output Power: 8w 1Organic Energy: Solar oxygen pumps, which do not require additional batteries or plugs, are very easy to use and save energy. 2Adjustable 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. 33 Working Modes: Strong, medium and weak. Fully meet every occasion and need. You can adjust the working mode according to different usage scenarios. 4Multi Purpose: Widely used in various fish tanks, swimming pools, ponds, aquariums to increase fresh air, to meet your different use needs. 5Note: 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.