1 x cree xp g2 ledcopper coated circuit board for supeior heat transfercnc aluminium heat sinkintegrated light sensor auto on offmode memory functionquick release rechargeable lithium ion battery37v 1400 mah7 modeslow battery charging and fully charged indicatorauto fully charged cut offhigh precision optical lensside visibilitywaterproof ipx477 degree total beam angle16 degree spot angledaytime flash mode 450 lumens 57 hour runtimeincludes universal bracket