By simply pushing two buttons you can change the lens power on this 2 LED Magnifier with 3 Interchangeable Lens. Switch between 2.75 inches (2.5x power), 2.50 inches (6x power) and 1.375 inches (16x power). The handle features two bright, long lasting LED bulbs for lighting up your viewing area. Handle measures 4 inches long. Requires 3 AAA batteries (not included).