Boasting as much as 50% more light than our previous LED switchbacks, Race Sport Lighting's High-Powered Switchbacks use a unique lens system to intensify and project light further for ultimate visibility. For this reason, our high-powered switchback LED bulbs are TWICE as bright as other switchback LED bulbs on the market! These high-powered 1157, 3157, or 7443 Switchback LED bulbs are direct replacements for dual function lights that have both the parking/city light and turn signal function in one bulb. - White/Amber Switchback function - LED Quantity: 28 LED Emitter SMD Chips on each LED bulb - Operating Voltage: 1-16VDC - Special IC built-in for delay between Amber and White - Although typically not required, we recommend installing our 6OHM25WATT load resistors with these bulbs to prevent hyper-flashing or error messages - 1 Year Warranty