The Jacto DJB-20 has an exclusive timer system that applies from 5 to 300-ml dosages with precision and speed, making it easy and practical when needing to apply precise applications. One battery charge allows for 50 ml dosages to be applied more than 10,000 times. An easy to use panel control and monitors your DJB-20 sprayer and allows you to easily switch from doser or sprayer with just one button. When in doser mode the Jacto DJB-20 has 5 dose intervals available. Pull the trigger once and the sprayer does the work for you, the liquid is dosed according to the selected time interval. With 5 level of constant pressure regardless of the battery level, a uniform application will be applied from start to finish. Easy to remove and install battery charges in only 4 hours and delivers more than 50gallon of application.