The h4 led headlight bulb uses 2nd generation Z-ES chips, giving an output of 12,000 per set. 6500K cool white provides better visibility for the driver during night driving. 200% more than stock bulbs. Compatible with h8, h9 and h11 sockets Same beam pattern with halogen bulbs. The size and position of LED chips are close to the filament in halogen bulbs, so the LED bulbs work well in the headlight housings, no dark spot and no blinding oncoming vehicles The whole lamp body made of aviation aluminum, 12,000/min high-speed cooling fan and IP65 waterproof rate ensure more than 30,000 hours of continuous lighting even in rainy or bad weather Easy to install. without directly plugged in, no driver or external connector, non-polarity plug, make the h11 led headlight plug in and like halogen bulbs Socket Type: H4 LED Chip: 2Nd Z-Es Voltage: 9-18V Current: 20A Power: 120W Lumen: 60000 / Pcs Kelvin: 6000K-6500K Pol Arity: Non-Polarity PCB: Double-Sided Copper PCB Fan: Highspeed Silent Fan