Foldable free standing desk top magnifier 105mm glass lens. Distance between bottom stand and underside of lens is 150mm. Outer diameter of frame is 170mm height 132mm across 160mm wide from front to back. Back frame is solid, housing 3 LED back lights to illuminate work piece placed at the base.Lens is 3x focal size 105mm glass circular lens. Runs on 3 AAA Batteries (not supplied). An on/off switch is mounted in back plate.