The mk ii light generates 130 lumens of light from very compact design the flexible brackets mean this light can be fitted with ease 1 pce 18 chip cob high brightness led rchargeable lithium polymer battery 37v 500 mah 8 modes 3 x o rings 20 26mm 26 40mm 40 52mm rubber insert pads low battery charging amp fully charged indicator automatic fully charged cut off system side visibility ipx4 300 degrees total light angle 39 degrees spot angle 29g 72mm x 24mm x 22mm runtimes overdrive 130