1. More Wavelength Option: Singlemode 1310/1550nm Multimode 850/1300nm PON live Test 1625/1650nm; 2. Wide Dynamic Range Selection up to 45dB; 3. Multi Functions in 1 OTDR with OLS OPM VFL Touch Screen Smart Event Mapper Fiber End Face Inspection; 4. Dual Battery Design for Heavy Testing Task;