... Outfit: 1,Viewing Head : Sliding Binocular Head, at 45 Rotatable 2,Objective: Achromatic DIN 4X,10X,40X(S),100X(S,Oil) etc. ... the microscope.Outfit:1Viewing Head : Sliding Binocular Head, at 45° Rotatable2Objective: Achromatic DIN 4X,10X,40X(S),100X(S,Oil) 3Eyepiece: ... (Compensation free),in order to observe comfortably and conveniently. Binocular head,trinocular head and monocular head are optional.,5. ...