Versatile Headband Magnifier, 4 Pieces | ELP-550.00 Great for hands free magnification of small jewelry and watchmaking component Comes with 4 lens plates: 1.2X, 1.8X, 2.5X and 3.5X Lens plates snap easily on and off Center positioned swivel 2.2 volts/0.75 amp lamp Runs on 2 AAA batteries, not included