ITEM NAME:1X(Metal Fiber Optic Tester Sc/Fc/St Adapter Fiber Optic Cable Visual FaultO3A3) 1X(Metal Fiber Optic Tester Sc/Fc/St Adapter Fiber Optic Cable Visual FaultO3A3) 1X(Output optical power: 10mw Output wavelength: 650nm Output distance: 10 km (reference) Optical Brazing Adapter: Universal Connector Operating temperature: 0-60 degrees Celsius Storage temperature: -20-70 degrees Celsius Battery type: 2 5th battery colour:black + blue Material:aluminum Product size: 17.5*2.6*2.6cm Package Contents: 1 * fiber tester 1 * carrying case 2 * batteries 1 * lanyard 1 * ceramic die 1 * box)