2.0X - Working Distance: 9-1/2" to 13-1/2" (24-34cm) Frame Size: 5-1/4" x 6-1/2" (133mm x 167mm) Lens Size: 4-1/4" x 1-3/4" (110mm x 45mm) Hawk Eye Red Head Loupe 2x New from Japan, the “Hawk Eye” Head Loupes are lightweight and very comfortable to wear. These high quality head loupes have large hard coated acrylic lenses set in red colored TR90 memory plastic resin frames. Eye pads are made of super comfortable elastomer resin. These are the red colored framed longer focus versions of the Hawk Eye Head Loupes. Hawk Eye Head Loupes are also available in black colored framed regular focus versions that have a slightly closer working distance, see comparisons below.