Features: 1. Fiber optics transmit light system, the fiber optics extend to the tip of the instrument for more light output, less glare. 2.2.5 x magnification 3. Disposable Specula: 2.5mm and 4.0mm 4. Insufflation Port: View tympanic membrane using an insufflator bulb. 5. Pocket clip with integral on/off slide switch design, more convenient for mobile diagnosis. 6. Available with AA alkaline or Ni-MH batteries. Technical Specifications: Illumination Form: Fiber optics transmit light Illumination of light spot: The brightness of the tip is =1000 LX Magnification of lens: 2.5 x Diameter of ear-specula: 2.5mm, 4.0mm Insufflation Port: Yes Power of bulb: 2.5V, 1.6W Type of bulb: Halogen lamp Rated voltage: 2 AA alkaline or 2 Ni-MH batteries