Features Premium Material: Made of environmentally friendly and shock-resistant premium plastic, ensuring durability and a long service life. Solar Power Supply: Utilizes solar panels to absorb sunlight, converting solar energy into electricity, making it an energy-saving and eco-friendly solution. 3 Modes: Offers 3 different working modes - high gear, medium gear, low gear, for customizable usage based on specific needs. Portable: Compact and lightweight design makes it easy to carry and use, ideal for outdoor fish pond oxygenation and a practical fish farming tool. Widely Applicable: Suitable for various aquariums, fish tanks, swimming pools, and ponds, especially effective for increasing oxygen levels in case of insufficient supply. Specification: Item Type: Solar Oxygen Pump Material: Plastic Gross Weight: 663g / 23.4oz Product Size: Approx.19.1 x 17 x 2.7cm / 7.5 x 6.7 x 1.1in(solar panel), Approx.9.2 x 5.3 x 5cm / 3.6 x 2.1 x 2.0in(oxygen pump) Battery Type: Lithium battery (delivered with built in battery) Battery Model: 18650 Battery Capacity: 2200mAh Solar Voltage: 6V 2.5W Air Pump Type: DC miniature air pump Air Pump Rated Voltage: 3.5V air pump Current: 450mA Air Volume of Oxygenating Pump: 1L/MIN Working Status: Work for 5 minutes and stop for 5 minutes Working Hours: 24 hours Package List: 1 x Solar Panel 1 x Oxygen Pump 1 x Straight Head 1 x Tee Head 2 x Air Stone 1 x Hose 2 x Accessory 2 x Screw 2 x Expansion Tube 1 x Manual Package List 1 x DIN-Rail Electric Meter 1 x Manual 4 x Accessories