tres 3-phase track spotlight with GU10 socket for versatile use The Tres track spotlight for the three-circuit track can be used to illuminate living rooms, corridors or other rooms in the home as well as various commercial areas such as shops. The spotlight, which can be rotated through 330° and swivelled through 180°, offers flexibility in the direction of the light beam. There is a GU10 socket in the Innes of the spotlight, into which any type of bulb with this socket can be inserted - from conventional halogen reflectors to contemporary, energy-efficient and long-lasting LED variants.