Description Description: The oxygen pump with built-in rechargeable lithium battery to store power, so the oxygen pump also works outdoors, it can be powered by power bank, computer, car charger, etc Suitable for small pond, outdoor fish tank, etc Features: [Two Power Modes] In the case of full power, continuous mode up to 15 hours working time, indirect mode working time 30 hours. [Large Air Volume] Quiet and stable oxygen pump with 3L/min or 6L/min air volume, provide sufficient amount of water circulation in your aquarium. [Quiet] The aquarium air pump is made of ABS thickening plastic, super quiet air pump. [Portable Buckle] Comes with a buckle, can be hung on your bag, tackle box, fish tank when moving. [Widely Applicable] Suitable for home aquarium, outdoor fishing, emergency air pump, aquarium transport, pond. List of type 1 packages: 1 * oxygen pump 1 * connector 1 * Aerial Stone 1*1m Aquarium Oxygen Hose Note: The oxygen increase device cannot be placed in water and the