The Roborock water tank is a practical accessory for vacuum robots, specifically designed for the S6 Pure White, S6 Pure Black, and E4 models. With a capacity of 180 milliliters, this water tank allows for efficient use of the vacuum robot by ensuring a consistent water release during the cleaning process. The water tank is easy to install and remove, making maintenance and cleaning of the device simpler. It helps optimize the cleaning performance of the vacuum robot by enabling a moist cleaning that effectively removes dust and dirt. This accessory is an essential component for anyone looking to enhance the functionality of their Roborock vacuum robot. The water tank is robust and durable, ensuring long-term use. It is an ideal addition for those who value thorough and efficient cleaning.