Convoy C8 8 Modes 7135*8 Cree XMLT6-4C LED Flashlight Lamp White 6500-7000K For Cycling,Camping LD567 Driver circuit Board AK47 7135*8 When the battery voltage is lower than 3 v low voltage, flicker automatically. AK47 7135*8 2 seconds electricity memory way:A gear open for more than 2 seconds,then this gear is memoried. So open a gear mode within 2 seconds, change mode just need to half press the switch once.If it is more than 2 seconds,you need to half press the switch twice continuously. 1 x Convoy C8 XML U2-1B 7135*8 LED Flashlight