ParameterDescription: Total magnifications ..............................40X-1600X Eyepiece ..................................................WF10X Achromatic objectives ..........4/0.10 10/0.25 40/0.65 ........................................................ 100/1.25(Oil) Condenser ................................................NA1.25 Coaxial coarse and fine focusing adjustment knobs Base ....Built in 6V 20W halogen bulb with adjustable brightness Optional accessories 1) Eyepieces .....................WF16X WF10X (article ) 2) Photo eyepiece ..........................S2.5X S4X 6.3X 3) S-Plan achromatic objectives ........................ 4/0.10 10/0.25 40/0.65 100/1.25(Oil) 4) Plan achromatic objectives .............. 4/0.10 10/0.25 25/0.4 40/0.65 100/1.25(Oil) 5) Dark field attachment.............Dark field condenser 6) Simple polarizer attachment ...........Polarizer slide ........................................................Analyzer slide 7) Phase contrast attachment 8) 35mm photo attachment 9) C-Mount and CCD camera