- Versatile Charging Options: Enjoy hassle-free recharging with two methods. Use the solar panel outdoors when sunlight is available, or easily connect the USB data cable for charging indoors or on cloudy days. Stay powered up whenever you need it. - Enhanced Oxygen Production: The Solar Oxygen Pump features a robust pure copper coil motor that maximizes performance and extends the product's lifespan. With a unique double pump design, you can expect a significant increase in oxygen levels. Even if one pump encounters an issue, the system ensures at least a 50% increase in oxygen supply to your pool. - Durable and Reliable: Built with high-quality tempered glass solar panels, this pump is designed for longevity and stability with an integrated stand. The advanced overcharge protection on the 18650 lithium battery enhances durability, ensuring prolonged usage over time. - Customizable Runtime: Equipped with an impressive 8800mAh (or 17600mAh) lithium battery, the Solar Oxygen Pump offers four operational modes to meet your specific needs: - Mode 1: Continuous use for approximately 52 hours (or 140 hours). - Mode 2: Up to 72 hours of continuous operation (or 140 hours). - Mode 3: Runs for about 104 hours (or 208 hours). - Mode 4: Maximum endurance of approximately 156 hours (or 312 hours). - Practical Applications: Ideal for enhancing the oxygen levels in koi ponds, fish aquariums, or swimming pools. Easily benefit from cleaner, healthier water environments for your aquatic life or recreational use. This product serves as an excellent choice for both enthusiasts and professionals looking to maintain water quality efficiently. With superior oxygen output, versatility in charging, and durable construction, the Solar Oxygen Pump is a reliable solution for any aquatic environment.