Neptune 2-in-1 Knapsack Power Duster Sprayer, a versatile and efficient tool designed for advanced pest control and agricultural applications. Featuring a powerful 43 cc 2-stroke petrol engine, this backpack unit combines both mist blowing and dusting functionalities, offering a comprehensive solution for pesticide application. With a generous 20-liter capacity and cutting-edge ...technology, it is ideal for large-scale agricultural use, ensuring effective coverage and performance. 2 stroke & 4 stroke Feature 2-Stroke Power Sprayer 4-Stroke Power Sprayer Fuel Used Petrol mixed with 2T oil Only petrol (20W-40 oil separate add) Maintenance Higher maintenance required Low maintenance Fuel Efficiency Less fuel efficient More fuel efficient Noise Level More noise Less noise, smoother running Starting Easy and quick start Smooth and stable start Weight Lighter in weight Slightly heavier Power Output High power for short duration work Consistent power for long duration work Operating Cost Higher running cost Lower running cost Best Usage Small farms, occasional use Large farms, regular & professional use