This 2.5x Power 3.5-inch Acrylic Lens COB LED Magnifier includes a 7x Spot Lens. The aspheric lens allows for increased magnification and image clarity while greatly reducing edge to edge distortion. The magnifier has a 3.5-inch diameter acrylic lens and 3 ultra bright COB LEDs with diffusive cover lenses. Light diffusers work to eliminate LED hot spots, blending and evenly distributing the light. COB LEDs are brighter than traditional LEDs, provide a greater uniformity of lights and consume less power. This magnifier also features a multi position switch with 2 brightness settings - ideal for reading fine print; reading or viewing something in low light environments; and for hobbies, crafts, or everyday needs. Uses 2 AAA batteries (not included).