... makes the machine more human oriented.l Remote and panel double control, LCD display.l 10 functions with Remote control: ... stroke, horizontal/vertical, lob,random, top spin, back spin.l Double power, AC110V-240V, DC12V available.l Ball speed : 30-150 km ... variable adjustment (remote control frequency adjustment).l Internal battery , Battery power warning display, Battery working hour: 2-3 hrs.l It ...