LED Source:COB Battery type:3.7V 6000mAh Li-ion Battery (21700) Dimension:380(L) x 76(W) x 58(H) mm Max output:2000lm Funciton:Dual switch control - high brightness white light - low brightness white light - red light always on - red light flashing (Press any position for 1.5 seconds to enter sensor mode) RunTime:4h Material:Silicone+Plastic