Viewing Head: monocular vertical tube. Working Stage: working stage with slide clips. llumination: LED illuminated. Batteries Needed: 3 x AA batteries . Suitable for: primary and secondary school students. Eyepiece: WF10X and WF20X Objective: achromatic 4X, 10X and 40X Relay Lens: 2X Optical Magnification: 40X, 100X, 400X, 80X, 200X, 800X, 160X, 400X, 1600X Package Included 1x WF10X eyepiece 1x WF20X eyepiece 1x 2X relay Lens 1x microscope main body with 4X 10X 40X objective 1x smartphone adapter 1 set of biological accessories Attention The cellphone and batteries are NOT included. The style of cellphone adapter will be shipped at random. Please allow slight dimension difference due to different manual measurement.