Bicycle Parts LED: -LED Type:XM-L T6 LED. -Quantity Of LED:2pcs. -LED Life:100,000 hours. -Feature:More condensed light,long exposure distance. 4 Switch Modes:Weak,Middle,Strong,Strobe. Switch Type:Blue Button. Runtime:2-4 hours. Switch Location:Tail-cap. High-performance electronic switch. -Slightly click the switch to turn ON/OFF the light. -Slightly click the switch to change the brightness modes,LOW-MID-HIGH. -Long press the switch for more than one second to access to Strobe mode. Battery indicator(beside the blue button) -Three lights lit on(power80%). -Two lights lit on(50%power80%). -One light will lit on and will flash three(runtime30minutes). Power Source:1x8.4v 6400mAh Battery Pack(Included). Battery Charger(include): -Voltage:100v-240v. -LED indication for Power On/Charging/Full charge. Note: -1.Remove batteries for long times of inactivity or during transportation. -2.Do not use petroleum-based lubricant on the waterproof O-rings,which may cause damages to the O-ring. -3.IPX-7 waterproof rating,unable to support dive use. 123_ 1 x XM-L T6 LED Bicycle Light. 1 x 8.4 V 6400 mAh battery pack. 1 x Charger for this battery pack. 2 x Spare O-ring. 1 x Adaptor Fit for your country(EU/AU/US/UK)