The carson hf-25 is a universal necklace loupe with 2x magnification and 110mm lens. it is perfect for any activity or hobby where you need both your hands. you can use the magnifier hands-free because of the carrying cord located on the body.  In addition to the 2x magnification, the magnifier also features a spot lens (3.5x) to magnify small parts even further. for a high level of comfort, this cord is adjustable, so that you can place the magnifying glass in the desired position yourself. the necklace loupe is also known as an embroidery magnifier. Usage carson hf-25 necklace loupe The envelope magnifier is a popular accessory to use when reading, crafting, knitting and embroidery. how does it work? Simply hang the magnifier with carrying cord around your neck and set the cord at a comfortable angle and viewing distance. now you can use the magnifying glass for hours at a time, while keeping your hands free at all times.