Instructions for connecting the mobile phone photography stand:

Product specifications

Magnification	7x
caliber	50 mm
real field of view	6.8°
field of view	119m/1000m | 357 ft/1000 yds
exit pupil diameter	7.1mm
Good viewing distance	13mm
Minimum focus distance	8m
pupillary distance adjustment	56 to 72mm
Diopter adjustment range	±3
Glimmer coefficient	18.7
relative brightness	50.41
Limiting magnitude	Ideal: 10.99｜Medium: 9.99｜Poor: 8.99
lens coating	multi-layer coating
prism glass	BK7
size	168 mm x 198 mm x 64 mm
weight	774g