... the bulb is T4954, 2.5V, 1.6W. The Otoscope is used to view the tympanic membrane and external ear ... transmit light system, the fiber optics extend to the tip of the instrument for more light output, less glare ... light Illumination of light spot: The brightness of the tip is =1000 LXMagnification of lens: 2.5 xDiameter of ... Safety Standard: GB9706.1 internal power source Fiber Otoscope, otoscope, ENT