1. RB-400Gmicroscope is used with 10" monitor.2. It is used to detect the defects of fiber optical connector end surface after polished or during the fiber usage, especially proper for detecting of MTRJ, MPO, and FC both in PC or APC connectors. 3. It can check SM, MM fiber optical connectors, PM fiber optical connectors. 4. Connectors proper for checking: FC/PC, FC/APC, SC/PC, SC/APC, ST/APC, LC/PC, LC/APC, MU, MTRJ etc. 5. Monitor is high definition of image. Showing enlarged 400 times, 200 times or 80 times. 6. The store has a camera function, data retention easier.