Step 1: Shave your hair and dry your skin. Use a medical alcohol wipe to clean the flash window.
Step 2: Plug in the device,the power button start to flash, which shows it is in the standby mode. (Note: The power button is the Flash green light.)
Step 3: Click the "OFF/ON" button to start the device, after starting the device, click "OFF/ON" to adjust the energy level. The device has 5 energy levels,from 1 to 5.( Blue intensity light is on)
Step 4: Place Flash Window vertically and firmly on