Eschenbach Magnifier – Mobilux Aspheric LED Illuminated Hand Held Magnifier, 3.5x Magnification, 10 Diopter, 75×50 mm Lens Diameter. SMD LED Illumination. 75×50 mm lens diameter. Aspheric lens type. Protective case Included. Leatherette case material. 2 AA Batteries (Included). Ergonomic with easy on/off switch mount. PXM plastic with Cera-tec coating lens material. Snap-on yellow filter included. Lifetime warranty. — Illuminated hand-held magnifiers provide magnification and illumination for spotting tasks and they are ideal for in-home uses such as looking up phone numbers, setting the thermostat, or reading the prescription on a medicine bottle. Reading a menu in a dimly lit restaurant, or looking at a map in the car. The new 1511 Mobilux series of illuminated hand-held magnifiers features LED illumination with many new benefits. SMD LED (light emitting diode) illumination provides an alternative light source preferred by many patients due to its distinctly whiter spectrum and longer useful life. In addition to the bulbs offering nearly unlimited life (50,000 hours), the batteries last 5 times as long as when used with incandescent bulbs. These features provide lower usage costs and make the magnifiers even easier to use. To soften the color of the light small yellow filters are included which can be snapped-on over the LED bulbs to provide an illumination option. High quality lenses that are nearly distortion-free. Cera-tec coating which makes the lenses nearly glass hard and protects them from scratches. The SMD LEDs provide optimum illumination and with the optional yellow filter in place, a second warmer white light is available. The step-up converter provides consistent illumination over time because the power supply of the LED is evenly regulated – this provides an efficiency level of more than 80 percent. Plus, this active miniature switching regulator helps to provide bright illumination – over 50 percent brighter than the competition.