The vanguard spirit xf 10x42 binoculars feature 10x magnification and a 42mm objective lens diameter the spirits user friendly features such as its centre focus wheel open bridge design and rubber shock resistant exterior provide you with a comfortable yet solid feel in the hands fully multi coated lenses and phase corrected bak 4 roof prisms provide you with bright colourful images with plenty of contrast and edge to edge sharpness the spirit xf binoculars are perfect for the great outd