4.3 inch HD LCD display, high power sound, friendly user interface, dynamically display working status. Audible and visual alarm for expansion, empty, empty, low battery, end of a charge, syringe loss, for the incorrect setting. Compatible with 5/10/20/30/50 / 60ml syringes of any brand. The number of preset solutions to reduce the workload of nurses. Three functional modes and three levels of termination purge and ball function.