The Garmin Varia Spree Remote will help you control your Varia light units with this rugged, compact and lightweight remote control unit.  Garmin Varia Spree Remote Features Controls brightness on lights, controls pattern, intensity, beam focus (high-beam/low-beam) and turn signals when used with a secondary tail light Turns lights on and off Includes road bike and mountain bike mounts Water rated to 50 m the remote unit is designed with the harshest of riding conditions in mind Easily replaceable lithium CR2032 battery lasts up to one year by entering sleep mode when not in use