Pentax 9х42 DCF BR

Weight: 665 g
Brand: Pentax
Description: Type: binoculars, magnification: 9 x, objective lens diameter: 42 mm, exit pupil diameter: 4.70 mm, functions: pupillary distance adjustment, features: case/pouch included, design: aspherical lenses, retractable
Width: 128
Height: 59
Type: Binoculars
Length: 147 mm
Lens diameter: 42 mm
Exit pupil diameter: 47 mm
Minimum focusing distance: 2.5 m
Field of view at a distance of 1000 m: 107 m
Increase: 9 x
Angular field of view apparent: 51.2°
Angular field of view real: 6.1°
Eye relief: 18 mm
Diopter adjustment: ±4D
Interpupillary distance max.: 74 mm
Interpupillary distance min.: 56 mm
Relative brightness: 22.1
The Twilight Factor: 19.4
Prism type: Roof
Number of groups of optical elements: 6
Number of optical elements: 8
Focusing: Central