Bijia Magnifying Glasses Head-Mounted Loupe Upgraded USB Rechargeable Eyeglass Magnifier With LED Light Suitable for both Glasses and Headband Magnifying Glass 5 Interchangeable Lenses: 1.0/1.5/2.0/2.5/3.5x I recently purchased this on Amazon. I'm selling it because the magnification levels don't suit me, as I usually use 1.3x or 1.6x for detailed work.