Mini Size, Eyepiece: 10*,Objective 4x, 10x, 40x 1.45º inclined with locked-in eyepiece. 2. Eyepiece: 10* 3. Objective 4x, 10x, 40x, 4. With plan -concave mirror Optional Accessory: Eyepiece: WF5X, 10X, 15X, 25X Biological Slides Biological Dissection Set Zoom eyepiece: 1.0X-1.4X Outer-connected illumination: 220V/110V,6V/6W