Celestron 10x42 Nature DX Binoculars (Black) - Manual (Page 7)

ENGLISH I 5
EYECUP ADJUSTMENT
The Nature DX binoculars feature twist-up
eyecups to accommodate both eyeglass and
non-eyeglass wearers. If you do not wear
eyeglasses, twist the eyecups counterclockwise
until they reach the up position. If you wear
eyeglasses, make sure that the eyecups are in
the down position to obtain the maximum field
of view. The eyecups can be set at positions
between fully up and down that may suit some
users better.
Fig. 4