... .45o inclined and 360o rotational binocular head with locked-in eyepiece. The left ocular-tube with diopter adjustment ±5dp, The interpupillary ... . 8.A wide range of optional accessories.Optional accessories:1.Eyepiece WF5X, WF10X, WF15X, WF20X2.Objective 1X, 2X, 3X,4X, 3 ...