※ To reduce shipping costs, this item will be shipped without the original box and packed in a Yu-Packet Plus box. Size: Two air outlets 【Product Contents】 Battery: 3.7V 1800 mAH/2200mAH Product operating voltage range: 3.0V - 4.25V Noise: Less than 35dB Working time: Continuous operation for 25 hours in normal mode, and continuous operation for 50 hours in intermittent mode (when fully charged) 【Large Capacity Battery & USB Rechargeable】The air pump has an air output of 1.2L/min x 2 and has a built-in 2200mAh battery. Recommended for water depths up to 60cm. It can operate continuously for 25 hours and for 50 hours in intermittent mode. Accessories include a charging cable, tube, and air stone. 【Quiet Design】The thick plastic case provides soundproofing, and the vibration-absorbing rubber feet prevent vibrations from being transmitted to the surroundings, making this air pump ultra-quiet. It is quiet during operation, so you won't be bothered by the sound while sleeping or working, and it won't interfere with your daily life. 【Compact & Easy to Carry】Lightweight at only 200g, with a grip for hanging on a water bucket, making it easy to carry for outdoor fishing. Long press to turn on, short press to switch motor modes, and adjust the air flow. This touch-type oxygen pump prevents accidental operation. IPX4 waterproof specifications allow for use in general river fishing and sea fishing without problems. (Note: Do not submerge in water.) 【Wide Range of Applications】This aquarium air pump is compact and can be used both indoors and outdoors. It is ideal for home aquariums, outdoor fishing, fish markets, long-term aquaculture of fish and shellfish, laboratories, etc. It provides oxygen, keeping fish lively.