The traditional halogen examination is very popular from former to now because its nice design and competitive cost. Minor lamphead enable closed exam without blocking out the vision of the users. Technical features(Q35) Light intensity: 30000lx(D=30cm) Diameter of lamphead: 75mm Color temperature: 4500K Brightness adjustment: Control by dimmer Light fiel diameter: 8-25cm Extension of arm 76CM ajustable Light source: 1 Halogen bulb LED average life: 2000 hours Power consumption: 35W Input Voltage: 110V-265V 50/60Hz Available configuration: Mobile, Wall Color: Black, White