Please watch the teach video to know how to use it in detail. Night Flash (best, brightest and most functional flashlight for free) Night Flash is a LED/Panel light communication tool and flashlight tool. It is helpful for climber. Have many effect and Morse code to help them do light communication. Basic : Continuous / Low / Middle / High Speed. SOS : SOS signal. Adjust : Adjust light time and dark time. Effect : Many different flash mode. Morse Character : Flash single Morse code character. Morse String : Flash Morse code string. Touch On : Touch button to open flash, release to close flash. Others : 1. You also can use volume-key to turn on/off led/panel. When you use panel-light, this method can protect your eyes. (It only works when panel is active) 2. Some flashlight's on/off speed is slow, you maybe need to scroll the seek bar to lower speed(For some special light effect). PS Please like us on Facebook. Give us the power of love. https://www.facebook.com/jkfantasy