About this item lifespan - more than 30,000 hours life time,12,000 rpm most efficient double roller cooling fan to kill heat,unique integrated aluminum design for heat conduction,inner intelligent chip to control optimum temperature and brightness build in cooling copper tube for maximize heat dissipation. All in one compact design imported high power flip chip. (PACKAGE : 2 PCS LED BULB) Kindly install with the help of mechanic and also make sure that is should be fixed in the given direction and also don't hit the back side of light because if the cooling fan will be damaged then light got fused. Quality- h4 led headlight bulbs are made of anodized aluminum body, pa66+30% gf shroud,aluminum pcb,bridgelux cob,built-in turbo cooling fan,a3 fan shielded.smarter and superior performance. Fitting Type : H4 (3 Pin Bulb). Operating voltage: Dc 8-48v(fit 12v, 24v vehicles) colour temperature: Pure white 6000k IP68 waterproof premium aluminium housing, the headlight better works on rainy days and even in harsh conditions, 360 degree beam angle, Material: Aluminium alloy. Note : Not Suitable For Any Royal Enfield Models..