Features:-The handle has a built-in 2200mAh battery that can be used for 3 hours per charge, and is equipped with an indicator icon to track the remaining power.-The water tank has a 8L capacity, which reduces the need to frequently refill water and reduces your workload. The side of the tank has graduated markings that allow you to see how much solution is left.-Equipped with an adjustable shoulder strap, it can free your hands and facilitate long-term work.-Equipped with a telescopic pole, it can extend the length to 23.62 inches, which helps to spray hard-to-reach places.-Equipped with 3 nozzles, fan nozzle, 6-hole nozzle and direct spray nozzle, suitable for different scenarios.-The wide opening allows for quick filling and is also convenient for mixing .