The 1157 White And Amber LED Dual Color Switchback Auto Bulbs are a practical and efficient solution for your automotive lighting needs. With their dual color functionality, these bulbs provide both white and amber LED lighting options. Operating at a voltage of 1-16 DC, each bulb features 28 LED emitter SMD chips, ensuring bright and reliable illumination. Sold as a pair, these bulbs are equipped with an IC built-in for a delay between the amber and white lights. Additionally, they can easily replace most 1157 LED bulbs, making them a convenient choice for upgrading your vehicle's lighting system.