... of the breakpoint 2.It use 16-bit true color LCD screen display fiber fault location ,Portable Design3. FOL-30O is a ... test breakpoints function quickly,It use 16-bit true color LCD screen display fiber fault location ,Portable Design,Compact,Easy to carry ... , testing and maintenance.Optical Fault Features:1 3-inch color LCD display large screen2 Chinese and English menu,easy to operate3 one ...