Structure of W1 auto LED bulb: 1860 LED module; Aluminum substrate double sides; Fixing screw; Original standard adapter; Built-in intelligent driver; Aluminum heat sink body. 1860 LED Module: Top quality customized 1860 LED module. Double sides aluminum PCB: Thin PCB for better lighting pattern; High heat-conduction, much better than normal glass fiber board PCB; Good electrical insulation performance and high mechanical strength. Aluminum body: Aviation level aluminum alloy; Precise CNC machining, excellent heat-conduction; Large heat sink surface area, superior cooling performance. Driver: Stable and efficient; Constant current, non-polarity; High quality SMD components. Adapter: Original adapter, standard and small; Plug & play; PA66+GF15 Plastic material, anti 200℃ high temperature. Lighting: Available color: white(6000K), yellow(3000K); High lumen: 1500LM/white, 1000LM/yellow; Beam angle: 240°(horizontal & vertical); Good lighting pattern: same size and structure as halogen, standard lighting pattern. Testing: We have integrating sphere tester and other professional testing machines; All products in the order will be tested before ship out. Installation: Easy installing, plug and play, fits for almost all cars; CAN connect an extra resistor If have canbus problem, like error on dash board, fickler, etc. Warranty: Take video of the problem to replace new or refund with next new order. Package: Blister package: elegant, blister is sealed with high frequency plastic welding machine; Box package: supereme, high-end; Customized package is accepted, require order qty more than 1000pcs. Welcome to inquiry car LED bulb, LED headlight bulb.