The product shown in the image is the Kzubr KBS-20L battery sprayer. Its general specifications are as follows:
Tank Capacity: 20 Liters
Operation: Cordless and rechargeable battery-powered
Battery: Typically a 12V/8Ah rechargeable lead-acid battery
Operation Time: Approximately 4 to 6 hours of continuous use on a full charge
Max Pressure: Ranges from approximately 0.15 to 0.45 Mpa
Flow Rate: Generally between 0.8 L/min and 2.2 L/min, depending on the nozzle and pressure
Design: Ergonomic knapsack design with padded shoulder straps for comfort
Features: Includes an adjustable spray lance, multiple nozzles for different spray patterns, a voltage indicator/power meter, and a charger