... auto measurement,one-button operating ο Test up to four wavelengths with a single unit ο Communication light check automatically ο Remote ... format in writing or reading ο Built-in lithium battery with high capacity for over 8 hours of operating life ο ... 0.00001steps)Distance unitkm,m,kft,ftDisplay640×480, 6.5 inch TFT-LCD (touch screen)InterfaceUSB, Min-USB, Ethernet, earphone, SDOptical connectorFC/SC ...