General description For D9 Robot Vacuum Cleaner Water Tank Mopping Pad is designed for optimal performance and maintenance of your vacuum cleaner. Made of high-quality materials, this product ensures durability and efficiency in cleaning. Technical specifications Material: Plastic Package Contents: 1 x Water Tank, 4 x Mop Cloth Measurement allowed error: +/- 1-3 cm Usage As part of normal maintenance, the water tank and mopping pad can be easily removed and replaced. It is recommended to replace spare parts every 2 to 3 months to maintain the best performance of the machine.