Carson BoaMag2.5x/5x Magnifier Loupe Black/Gray. It can be used as a Hands Free or freestanding Magnifier. This Magnifier from Carson can help aide in installing needles threading your machine and viewing stitches and patterns. Simply wrap the Magnifier around your sewing machine for easy viewing. Or use the 20-inch coil to make a freestanding Magnifier and keep it on your desk for everyday uses. You can also wrap the coil around your neck for Hands Free applications like car repairs building in your workshop or other hobbies and crafts. The Carson BoaMag Magnifier can be wrapped around just about anything. One side of the BoaMag has a light and 2.5x lens with 5x spot lens Magnifier while the other end can just be used as a flashlight. You can power the Carson Boa-Mag SM22 Magnifying Glass using 3 AAA batteries or the included AC adapter. Specifications for Carson BoaMag 2.5x/5x Magnifier: Model Number: SM-22 Magnification: 2.5x / 5x Lens Size: 90mm (3.5") Weight: 12.5 oz Dimensions: 31.75" x 3.75" x 1" Accessories: 4.5v AC/DC adapter Batteries: 3 AAA (not included) MSR: 40 Features of Carson BoaMag 2.5x/5x Magnifier Loupe Magnification 2.5x/5x Lens Diameter 90mm Package Contents: Carson BoaMag 2.5x/5x Magnifier Loupe 4.5v AC/DC adapter Carson SM-22: BoaMag2.5x/5x Magnifier Black/Gray