This is the Elinchrom Modelling Lamp for Twin X4/Pack/Scanlite Head 650w GX6.35 Halogen [EL23005] The Elinchrom Modelling Lamp for Twin X4/Pack/Scanlite Head 650w GX6.35 Halogen (23005) is a spare modelling lamp for the Elinchrom Twin X4, all Pack Heads and Scanlite series. Burn time is 15 hours and the colour temperature is 3400K. Features: Specification: Also available: Elinchrom Modelling Lamp 300w GX6.35 Halogen (23022) Elinchrom Modelling Lamp for EL250/250C Head 100w E27 (23002) Elinchrom Modelling Lamp for Linear RE Head 500w Halogen (23029) Elinchrom Modelling Lamp for Minilite 250w E27 Halolux (23018) Elinchrom Modelling Lamp for Ranger RX 50w Halogen (23044) Elinchrom Modelling Lamp for RL1000/750S/1500S/R 200w GX6.35 Halogen (23034) Elinchrom Modelling Lamp for Scanlite 1000w GX6.35 Halogen (23052) Elinchrom Modelling Lamp for Style 300S Head 150w E27 Halolux (23035) Elinchrom Modelling Lamp for Twin X4/Pack/Scanlite Head 650w GX6.35 Halogen (23005) ...Contact us if you need more help.