Size:3-Diopter, 44 Inches | Color:Black This clamp-on full spectrum lamp isthe workhorse of magnifiers! With all metal construction and a long 48 inchreach, this heavy duty performance lamp will fill virtually any need. Thelarge 5 inch, 3-diopter glass magnifier lens enlarges by 175% to aid in workdetails, crafting, sewing, hobbies and more. This lamp includes a 22W circlingfull spectrum daylight bulb which provides a vivid and glare-free naturaldaylight effect for close-up detail work. The metal clamp is adjustable up toa 2-1/2 inch opening, making it adaptable to a wide variety of mountingsurfaces. The clamp also includes a metal locking pin to prevent unintendedlifting of the magnifier while in use. Includes manufacturer’s limited 90 daywarranty.