Portable soj ntsuam thiab sib ntaus ib tug system siv kev sib xyaw, compact tsim, nrog hloov tau yooj yim, siv tau yooj yim, yooj yim rau thauj thiab nqa, haum rau pej xeem kev ruaj ntseg tub ceev xwm, tub ceev xwm tshwj xeeb lub luag hauj lwm, tub rog saib xyuas thiab lwm yam scenarios, kom ua tau yooj yim thiab ceev xa mus. thiab dynamic thiab zoo tiv thaiv thiab tswj.