Sold SINGLE. Features 3 CREE high-powered LED diodes. 9 watt low beam, 18 watt high beam application. Approximately 1000 lumen output on low beam, 1500 lumen output on high beam. Includes Driver/Controller for easy installation, replaces any H4 bulb. Driver/Controller is approximately 3 1/2″ L x 1 3/4″ W x 1″ H.