Water Tank Action: Save money by turning your Tesvor X500 smart robot vacuum into a smart mopping vacuum. Works perfect for cleaning hard surface floors, like wood and tiles. Extensive Capacity: Tesvor X500 smart robot vacuum water tank comes with a Large capacity of 600 ml. Complete Compatibility: Compatible with X500 Robotic smart robotic vacuum cleaner only. Remote Control: Enjoy hassle-free cleaning by controlling your smart robot mop with your remote control or APP. What You Get: Package includes 1x Water Tank, 2x Mopping Towels, 1-year warranty, 30-days return policy, and friendly customer support. Note: For correct usage, please refer to the user manual.