Main Features: ●Small size, easy to carry ●3 optional brightness to choose ●USB port, easy to charge Instructions: ● Push the plug out when charging and insert it directly in 5V socket, and charge indicator will be light. Full charging time needs 2 - 3 hours. ● While using, press the button for transforming 3 modes in turns. ● The flashlight can be lighted continuously for about 12 hours at low brightness, for 2 - 3 hours at high brightness. Attentions: ● When the light is dim, please charge it immediately (Please keep charging once every two months). Otherwise it will affect the life seriously. ● Do not use it when charging. Otherwise it would burn the electric elements.