For Cross Reference Part Number: 1154 7443 2057 2357 3497 7528 BAY15d S25 and more Function: Tail Lights/ Strobe Flashing Brake Lights Size: 4.1 x 1.8cm/1.61"x0.71"(approx) Light Color:Red Chips: High power LED chips Power:5 W Working Voltage: DC 12V Socket type: 1157 BAY15D Condition:New Llumination Angle: 360° Quantity: 2 pc Features: High Power 360 degree lighting output Red 7443 LED Projector Bulbs, comes with strobe/flashing brake lights function. Newly high power LED strobe LED bulb for car tail/brake lights ( only strobe/flashing when brake lights turn on ), charming strobe/flashing brake lights for your own car style ! 1. LED Car light is made of Chip Led, and is Environmental-friendly, and energy-saving. 2. With a high technology sealing method, the lamps are good at shock resistance. 3. The lamps enjoy a light soft design, and they can be fixed to all car models easily. 4. The lamps enjoy a Long life span of 5000 hours. 5. The surface SMD spotlights can give a prompt light response in microseconds, which can safeguard the drivers safety greatly. 6. It shows no Radiation at all. Note: Since the LED Bulbs have lower wattage than stock 55w halogen bulbs, therefore when installing on some newer cars, you might need to add load resistors or special wiring harness to ensure the proper function. Package Included: 2 x 1157 Red LED Projector Strobe Bulb