| Model | N-300M | |
| Viewing Head | Compensation Free binocular head, 30° inclined, Interpupillary 48-75mm | ● |
| Compensation Free trinocular head, 30° inclined, Interpupillary 48-75mm | ○ | |
| Eyepiece | Wide Field Eyepiece WF 10×/18 | ● |
| Extra Wide Field Eyepiece EW10×/20 with Diopter Adjustment | ○ | |
| Objective | Infinitive Semi-plan Achromatic Objectives 4×, 10×, 40×, 100× | ● |
| Infinitive Plan Achromatic Objectives 4×, 10×, 40×, 100× | ○ | |
| Nosepiece | Quadruple Nosepiece | ● |
| Stage | Double Layers Mechanical Stage 140mm×140mm/ | ● |
| 75mm×50mm | ||
| Condenser | Sliding-in centerable condenser NA1.25 | ● |
| Focusing | Coaxial Coarse & Fine Adjustment, Moving Range 20mm | ● |
| Illumination | S-LED Illumination, Brightness Adjustable | ● |
| 6V/ 20W Halogen Lamp, Brightness Adjustable | ○ | |
| Phase Contrast Kit | ○ | |
| Dark Field Attachment | ○ | |