About this item: 
High quality professional optical glass elements; 45 degree inclined 360 degree swiveling binocular head 
8 levels of magnification: 40X-80X-100X-200X-400X-800X-1000X-2000X; 4 achromatic objectives DIN 4X, 10X, 40X(S), 100X(S, Oil) 
Sliding interpapillary distance adjustment; Ocular diopter adjustable on both eye tubes; Variable intensity illumination; Coaxial coarse and fine focus adjustment; Focusing knobs on both sides 
Stage upward moving lock protects objectives and slides; Stain-resistant double layer mechanical stage; NA1. 25 Abbe Condenser with iris diaphragm & filters; Rack and pinion adjustment condenser 
Built-in 1. 3MP USB Camera (Windows 7, 8, 10 & Mac Compatible) with Advanced Software for Windows