Use jessops5 for this price.
Aspherical eyepiece lens eliminates image distortion.
Wide field of view.
Multilayer-coated lenses and large objective diameter for optimal clarity of image.
Rubber armouring for shock resistance and a firm, comfortable grip.
Objective Diameter (mm): 40
Angular field of view (real/degree): 6.0
Exit pupil: (mm)4
Relative brightness: 16
Eye relief (mm): 10
Close focusing distance (m): 5
Interpupillary distance (mm): 56-72
Weight (g): 741
Length (mm): 137
Width (mm): 183