Road safety is a necessity with all the crazy drivers in the world today. Having your bicycle well lit provides you with the visibility required for other drivers to see you as well as allow you to clearly see the hazards on the roads. This bicycle can also be turned into a headlamp and is strong enough to survive any extreme sport that requires some extra light. The LED emitter provides up to 1600 lumens when set to maximum and has a great strobe feature. The external battery pack is 4400mAh and provides 4 hours run time at 100% power. This product is waterproof and can be used anytime rain or shine! Brand: MagicShine Model: MJ872 Casing: Light head shell made of 6069-T6 Aluminum Alloy Casing; Premium type III hard anodized anti-abrasive finish Emitter Brand/Type: CREE Emitter BIN: CREE XP-G Color BIN: White Total Emitters: 4 Battery Configurations: Powered by a rechargeable 8.4V 4400mAh lithium-ion battery pack (Battery overcharge protection) Voltage Input: 8.4 V max Switch Type: Clicky (Clickie) Switch Location: Tailcap (Tail-cap) Modes: 4 Mode Arrangement: 100% / 70% / 50% / 30% Brightness: 1600 lumens maximum brightness (manufacturer rated) Runtime: Up to 120 minutes run-time at 100% brightness (manufacturer rated) Lens: - Waterproof: IPX4 rated weatherproofing Accessories Included: Battery bag; Battery pack; 100~240 V AC charger; US plug power cable; 2 x Rubber O-rings