High-Capacity Lithium Battery: This fish oxygen pump is equipped with a high-capacity lithium battery, ensuring long-lasting performance. It can be charged via USB and can be used while charging, providing an uninterrupted oxygen supply to your fish. Intelligent Intermittent Working Mode: The oxygen pump operates in an intelligent intermittent mode, working for 10 seconds and stopping for 10 seconds. This ensures a continuous oxygen supply while saving a significant amount of power, thus extending the battery life. Quiet Operation: With a working noise level of less than or equal to 30 decibels, this oxygen pump operates quietly, ensuring a peaceful environment for both you and your fish. Durable and Portable Design: The oxygen pump features an ABS shell that is resistant to oxidation. It also comes with a silicone shock-absorbing pad to reduce vibration friction. With a buckle on the back, it can be clipped onto fish tanks, waistbands, clothing, etc., making it easy to carry around. Automatic Start-up in Case of Power Failure: In the event of a power failure, the oxygen pump will automatically start up, ensuring that your fish continue to receive a steady supply of oxygen. This feature makes it an perfect choice for both indoor and outdoor use, such as fishing. Battery capacity:4800MAh Type:Double Vent Hole Colour:White Material:Plastic Package Contents: 1 * Air Pump Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.