Regularly changing the vacuum cleaner water tank helps keep the inside clean and clear, ensures more stable water output, and allows for even water flow during use, making cleaning smoother and everyday use more enjoyable. Replacing the vacuum cleaner water tank helps maintain good water storage, fits tightly, and reduces the chance of leaks during use, giving you peace of mind. Changing the robot vacuum water tank makes water supply run more smoothly, so mopping isn't affected, and the water flows evenly as it moves, ensuring consistent cleaning throughout the house. The robot vacuum water tank also has excellent sealing, preventing leaks during operation, protecting internal components, and keeping the device running well for a long time. Compatible for Lefant， T700 (compatible with M571/M520)