... concept“Make progress day by day” concept,cultivate“Innovative, happy, unit, enterprising” spirit,and built up with “Immediate, true, meticulous ... 5. Using a wireless remote control to operate the flash.6. Precision light-output adjustments to an accuracy of 1/10 f-stop ... packed and loaded, such as aging test, sleep mode test, fuction test, surface inspection and so on. Remote Control Studio Flash