Specifications:

Objective diameter:  42 mm
Magnification:  10 x
Exit pupil: 4.2 mm
Eye relief (acc. to spec): 19 mm
Usable eye relief (measured from rim of eyecup): 17 mm
IPD:  57 – 75 mm
RFOV:  6.5  degrees = 114 m
Minimum focus distance (measured): 2.1 m
Focus type:  CF (direction of rotation from close to infinity: < anticlockwise)
Range of diopter adjustment (estimate): +/- 5 dpt*
Excess travel of focus wheel beyond infinity position (estimate): 7.5 dpt*
Prism system:  Schmidt-Pechan
Waterproof: yes
Weight (measured, with eyepiece cover and strap): 883 g
Made in: China
*range of diopter adjustment not affected by position of focus wheel

  

Remarks:

The Vanguard Endeavor IV is a typical example of today’s China made middle class binoculars sold by many US and European brands. Although featuring ED glass, it still exhibits quite a bit of CA as soon as you move your eyes slightly off-center. The size of the FOV is quite good; sharpness / contrast / brightness / stray-light control are okay, but nothing extraordinary. For the same prize, some other similar binoculars perform better optically (e.g. Bushnell Forge), some worse. Mechanically, the Endeavor can be rated average.

Ratings:

 

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