... ,energy saving,low power consumption, long service life.Light weight,easy to use and carry, and rainproof. Two modes: fast flash,constant,off ... , energy saving, low power consumption, long service life.Light weight, easy to use and carry,and rainproof. Two modes:fast flash,constant,off ... ,make sure the proper polarity.Do not forget to turn off the switch after use.Remove the batteries,when you are not ...