Pentax 8-16x21 UCF ZOOM II

Weight: 280 g
Brand: Pentax
Description: Type: binoculars, magnification: 16 x, lens diameter: 21 mm, exit pupil diameter: 2.60 mm, functions: Zoom, pupillary distance adjustment, features: case/case included, design: aspherical lenses, retractable
Width: 111
Height: 55
Type: Binoculars
Length: 111 mm
Lens diameter: 21 mm
Exit pupil diameter: 2.6mm
Minimum focusing distance: 3m
Field of view at a distance of 1000 m: 87 m
Increase: 16 x
Angular field of view apparent: 4.8°
Angular field of view real:
Eye relief: 14 mm
Diopter adjustment: ±4D
Interpupillary distance max.: 73.5 mm
Interpupillary distance min.: 56 mm
Relative brightness: 6.7
The Twilight Factor: 13
Prism type: Porro
Number of groups of optical elements: 4
Number of optical elements: 6
Focusing: Central