LED: CREE XP-G2 5W LED
Battery: 1x18650 Li-ion battery ( Capacity:real 2200mAh ,3.7V, fully recharged can reached 4.2V.included over charge,over discharge,overvoltageovercurrent protection chip inside,it can dischargecharge over
9.Light output: 300 Lumens
10.Adjustable beam: (Zoom in to Zoom out by pull out or push in)
11.Water resistance: IP44