With the Dreame Water Connection RAW8, the base station automatically empties and fills your robot's water tank. The water connection lets you connect the base station of your robot vacuum with mopping function to your water line. This way, you'll spend less time cleaning and maintaining your robot. You can use the water connection with the Aqua 10 Ultra Roller Complete, Aqua 10 Ultra Track Complete, and Aqua 10 Roller.