The oxygen pump with built-in a rechargeable lithium battery for storing energy, thus the oxygen pump works outdoor as well, it can be powered by a power bank, computer, car charger, etc. Suitable for a small-sized pond, outdoor fish tank, etc.

• Two Power Supply Modes: In the case of full power, continuous mode up to 15 hours of working time, indirect mode working time of 30 hours
• Large Air Volume: Stable silent oxygen pump with 3L/min or 6L/min air volume, provides a sufficient amount of water circulation in your aquarium
• Quiet: The aquarium air pump is made of ABS thickening plastics, a super silent air pump
• Portable Buckle: Come with a buckle, that can be hooked on your bag, fishing box, aquarium when moving
• Widely Applicable: Suitable for a home aquarium, outdoor fishing, air pump back up, aquarium transportation, pond

Specifications:

• Material: ABS, Electronic Component  
• Battery：3.7V, 1100mAh
• Power: 1W
• Tank Size: 30L
• Output: 3L/min
• Inermittent work mode: max 30h
• Continuous work mode: max 15h  
• Noise: 60dB        
• Oxygen Hose Length: 1m/3.28ft(Type 1), 2m/6.56ft(Type 2)          

Note: The oxygen-increasing device cannot be placed in water, and the diversion hole cannot be blocked.