Description: The oxygen pump built-in rechargeable lithium battery for energy storage, so the oxygen pump can also work outdoors, it can be powered by power bank, computer, car charger, etc. Suitable for small pond, outdoor aquarium, etc. Features: [Two power modes] Continuous operation up to 15 hours working time at full power, 30 hours working time in indirect mode [Large air volume] Quiet and stable oxygen pump with 3L/min or 6L/min air volume for adequate water circulation in your fish tank.[Quiet]The aquarium air pump is made of ABS thickening plastic, super quiet air pump.[Portable strap]Comes with a buckle, can be hung on your bag, fishing box, fish tank when moving. [Widely used] Suitable for home aquarium, outdoor fishing, emergency air pump, portable aquarium, pond. Features: Types: Type 1; Type 2 (optional) Material: ABS, electronic component Color: white Battery: 3.7 V 1100 mAh (Type 1), 3.74 V 2600 mAh (Type 2) Power: 1 W (type 1), 2 W (type 2) Tank size: 30 l (type 1),
