1、Compatibility: The replacement parts kit compatible for Proscenic D5S 850T 850P robot vacuum cleaner. Package include 1 water tank, 1 mop cloth. 2、Optimal Cleaning Efficiency: Mop cloth helps maintain the optimal cleanliness of your vacuum, ensuring efficient and thorough cleaning performance. 3、Easy Maintenance: The water tank is easy to clean, making maintenance a breeze and ensuring your robot vacuum operates at its best. 4、Durable: Made from ABS materials, this accessory is built to withstand regular use and continue delivering reliable performance for an extended period. 5、Easy to Remove and Replace: As part of regular maintenance, this water tank is designed to be easily dismantled and replaced when needed, making it hassle free to keep your vacuum in top condition.