LED Source:1PC LTG4+4PCS 2835 Battery type:3.7V 1200mAh Li-ion Battery (103040) Dimension:65(L) x 61(W) x 39(H) mm Max output:500lm Funciton:Main light high brightness - Side light high brightness - Main light+Side light -Red Light- Red light SOS; Top button: laser blue light; Red blue light flashes; Infinite dimming; Double click the switch to increase the amount of headlight explosion RunTime:1.5h Material:Plastic