Features: --Solar power supply: When the sunlight is sufficient, the solar power supply is given priority, and the internal battery can also be charged at the same time. When the sunlight becomes weak, the battery power supply is automatically enabled. --DC power supply: It can be charged with 5V DC power adapters such as mobile phone chargers, notebook computers, desktop computers, etc. When there is an external power input, the external power supply is given priority, and the internal battery is also charged. When the external power supply is disconnected (such as: power failure), it will automatically use the battery to supply power, and play the function of automatic oxygenation in the event of a power failure. --The solar integrated oxygen generator is suitable for the oxygenation of fish ponds and fish boxes, the oxygenation of wild fishing and sea fishing baits, the oxygenation of household/company fish tanks, and the emergency oxygen generation in case of power failure. --When using outdoors, please ensure that the sun is not blocked, and it can be exposed to the sun as soon as possible --Built-in high-quality rechargeable lithium battery, with a cycle life of more than 500 times, ultra-low power consumption less than 150mA, and continuous oxygen supply for more than 24 hours after full power

Description: Name: Solar Aquarium Air Pump Material: ABS Colour: Black Inner box size: 155 x 150 x 65mm Solar panel: 5.5V/1.5W DC charging: 5V/1A Battery capacity: 3.7V/4000mAh Applicable fish tank: 1.5 meters and below Oxygen production mode: continuous oxygen production/intermittent oxygen production Full battery life: 30+ hours Oxygen tube length: 1 meter Applicable scene: fish tank, aquarium, fish pond, garden, pond, etc.

Packing list:  Oxygenerator x 1 Oxygen pipe x 1 Bubble stone x 1 Charging line x 1 Back buckle x 1 Back buckle screw x 1 Instructions x 1 Ground plug x 1 Wall plug x 1 Screw pack x 1

Note: Due to manual measurement, please allow 1-3 cm error, thank you Due to screen and other objective reasons, there may be a certain color difference, please understand.