Sharp stereo erect image over a wide field of view. Standard working distance is 110mm, to create enough space for the uses 45inclined and 360rotatable binocular head .The interpupillary distance is between 54-75mm. Observation head 45 掳 inclined, diopter adjustment in two tubes, easy to operate and feel no fatigue when long time use. Wide field and high eyepiont eyepiece WF10X/22mm 10X large field of view eyepiece, FOV 22mm,plan and high eye-point design, more suitable for search and observation Ergonomics design, shift hand wheel level (axial) bilateral high repeatability precision. Best eye-point height, to ensure that different vision of the user can get a clear image